Semi-Persistent Scheduling Resource Allocation for Data Duplication
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing semi-persistent scheduling resources for data duplication in next-generation networks, particularly in 5G, which requires improved reliability and low latency for various usage scenarios, including URLLC, where traditional scheduling methods may lead to increased latency and resource inefficiencies.
Innovation Solution
A method and apparatus that allow a network node to receive a resource request from UE for semi-persistent scheduling (SPS) resources, allocating separate SPS resources for both the original and duplicate data logical channels based on the request, enabling efficient resource allocation and reducing latency through optimized scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional scheduling methods are used for data duplication in 5G networks, then resource allocation simplicity is maintained, but transmission latency increases and reliability decreases
Solution Approach 1:
The patent segments the resource allocation process by introducing separate SPS resource allocations for original data (first logical channel) and duplicate data (second logical channel). This segmentation allows independent scheduling and transmission paths, reducing latency while improving reliability through diversity transmission.
Solution Approach 2:
The patent implements preliminary action by pre-configuring SPS resources for both original and duplicate data channels before transmission begins. This advance resource allocation eliminates scheduling delays during actual data transmission, directly addressing the latency issue while maintaining high reliability.
2Productivity
If separate SPS resources are allocated for original and duplicate data channels, then transmission reliability and latency are improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies universality by using the same SPS resource allocation mechanism for both original and duplicate data channels. The network node reuses existing SPS configuration procedures and signaling structures, extending their functionality to handle multiple logical channels without creating entirely new complex allocation protocols.
Solution Approach 2:
The patent uses copying by replicating the SPS resource allocation structure for the second logical channel based on the first logical channel's configuration. This copying approach maintains consistency in resource management while enabling parallel transmission paths, improving performance without proportionally increasing complexity.
Data Source
AI summary
A method and apparatus are disclosed from the perspective of a network node. In one embodiment, the method includes receiving a resource request to allocate SPS resource from a UE, wherein the resource request indicates a first logical channel. The method also allocating the UE with a first SPS resource and a second SPS resource for the first logical channel and a second logical channel associated with the first logical channel based on the resource request.