Service Data Transmission via Network Slice Segmentation
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Solution Overview
Problem
The packet duplication mechanism in existing 5G systems is only applicable to symmetric service streams, making it unsuitable for asymmetric or hybrid service scenarios where upstream and downstream data have different quality of service requirements.
Innovation Solution
The method involves splitting service streams into multiple substreams based on transmission direction and type, establishing network slices or connections corresponding to each substream, and using the packet duplication mechanism only for substreams with higher quality of service requirements, allowing for flexible and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the packet duplication mechanism is applied to all service streams, then the reliability of data transmission is improved, but the device complexity increases and bandwidth utilization becomes inefficient for asymmetric scenarios
Solution Approach 1:
The patent segments service streams into multiple substreams based on transmission direction (uplink/downlink) and service type (symmetric/asymmetric/hybrid). This segmentation allows the packet duplication mechanism to be selectively applied only to substreams that require it, rather than applying it universally to all service streams, thereby reducing PDCP processing complexity while maintaining reliability where needed.
Solution Approach 2:
The patent applies different transmission strategies to different substreams based on their specific quality requirements. Symmetric service streams use packet duplication for high reliability, while asymmetric and hybrid service streams use alternative transmission methods optimized for their specific characteristics. This local quality approach ensures that each substream receives the transmission treatment most suitable for its requirements.
2Reliability
If the packet duplication mechanism is applied to symmetric service streams, then the transmission reliability is improved, but the adaptability to asymmetric and hybrid service scenarios deteriorates
Solution Approach 1:
The patent divides service streams into distinct substreams categorized by transmission direction and service type (symmetric, asymmetric, hybrid). This segmentation enables the system to apply packet duplication selectively to symmetric service streams that benefit from it, while using different transmission strategies for asymmetric and hybrid service streams, thereby maintaining high adaptability across diverse service scenarios.
Solution Approach 2:
The patent implements a dynamic transmission strategy where the PDCP entity can switch between different transmission methods based on the service stream characteristics. The system dynamically determines whether to apply packet duplication or alternative transmission methods based on real-time service type identification, enabling flexible adaptation to changing service requirements.
3Reliability
If packet duplication is applied to all substreams, then transmission reliability is improved, but bandwidth utilization efficiency deteriorates in asymmetric scenarios
Solution Approach 1:
The patent segments service streams into substreams and applies packet duplication only to symmetric service substreams that require enhanced reliability. Asymmetric and hybrid service substreams are transmitted using alternative methods that optimize bandwidth utilization. This selective application of packet duplication based on service stream segmentation resolves the contradiction between reliability improvement and bandwidth efficiency.
Solution Approach 2:
The patent changes the transmission parameters and methods based on service stream characteristics. By identifying the service type (symmetric, asymmetric, hybrid) and adjusting transmission parameters accordingly, the system optimizes both reliability and bandwidth utilization efficiency for different service scenarios rather than using a one-size-fits-all approach.
Data Source
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AI summary
Disclosed are a service data transmission method and apparatus, and a device, belonging to the field of communications. The method comprises: splitting the same service flow into multiple service sub-flows, wherein the service flow comprises at least one of an asymmetric service flow and a hybrid characteristic service flow; establishing network slices respectively corresponding to the multiple service sub-flows, wherein the network slice corresponding to at least one service sub-flow uses a packet duplication mechanism for transmission; and transmitting service data of each of the service sub-flows using the network slice corresponding to each of the service sub-flows.