Multiplexed Data Transmission for Mixed QoS Services
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Solution Overview
Problem
Current communication networks face inefficiencies in transmitting data packages with different quality of service (QoS) requirements, such as high data rate and low latency, as existing methods either prioritize one service over others, leading to underutilization of radio resources or increased latency when handling multiple services simultaneously.
Innovation Solution
A method and network node that multiplex data packages of different services with distinct QoS requirements by transmitting them over independent paths, allowing for efficient resource allocation and maximizing resource usage without requiring parallel decoding processes at the terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packages of different services are scheduled individually, then QoS requirements for each service are met, but radio resource usage becomes inefficient
Solution Approach 1:
The patent combines data packages from different services with different QoS requirements into a single joint encoding process. Instead of scheduling URLLC and eMBB services separately, the invention merges them into unified transport blocks that are jointly encoded and transmitted together over the same physical resources, thereby improving radio resource utilization while meeting both services' QoS requirements through layered decoding at the receiver
2Reliability
If data packages are jointly encoded using the lowest packet error rate target, then reliability is improved, but unnecessary radio resources are consumed
Solution Approach 1:
The patent applies local quality by assigning different reliability targets to different service types within the same transmission. URLLC data packages are encoded with high reliability targets (low packet error rate), while eMBB data packages use lower reliability targets (higher packet error rate). The receiver performs layered decoding, first decoding URLLC packages with high priority and then eMBB packages, thereby optimizing radio resource usage by not applying uniform high reliability encoding to all data
Solution Approach 2:
The invention segments the transport block into different layers corresponding to different service types. The transport block contains both URLLC and eMBB data packages organized in distinct layers, allowing differential encoding and prioritized decoding. This segmentation enables the system to apply appropriate reliability measures to each service type without wasting resources on services that don't require high reliability
3Reliability
If separate encoders are used for each service, then service-specific QoS requirements are met, but device complexity increases
Solution Approach 1:
The patent implements a universal joint encoder that handles multiple service types with different QoS requirements through a single encoding process. The encoder accepts data packages from both URLLC and eMBB services and processes them together in unified transport blocks. The multi-functionality is achieved by incorporating service identification and prioritization logic within the single encoder, eliminating the need for separate dedicated encoders for each service type while still meeting their specific QoS requirements
Data Source
AI summary
There is provided mechanisms for multiplexed transmission of data packages towards a terminal device. A method is performed by a network node. The method comprises multiplexing, for the terminal device, at least one data package of a first service having a first QoS requirement with at least one of at least two duplicated data packages of a second service having a second QoS requirement, different from the first QoS requirement. The method comprises transmitting the multiplexed data packages towards the terminal device over at least two independent paths. The duplicated data packages are transmitted on mutually different ones of the at least two independent paths.