# Analysis of 5G Channel Access for Collaboration with TSN Concluding at a 5G Scheduling Mechanism
## 8 Conclusions and Future Work  
While the standardization process of 5G is moving on to Rel-17 and beyond, the need for a higher degree of compatibility with TSN has gained high interest and is already receiving attention. However, the restrictions involved with maintaining the scheduling mechanisms of former broadband mobile communications includes the need to add  
Figure 11: Jitter for TSN Packet Size of 900 bytes.  
Figure 10: Jitter for TSN Packet Size of 800 bytes.  
Figure 9: Jitter for TSN Packet Size of 700 bytes.  
architectural structures which require additional configuration schemes themselves. The deployment of H/F functions separate from the AS consumes network resources and increases the complexity of Session Management, as traffic shaping has to be applied by Translator Functions.  
In this work, we propose a novel LCP framework. An analysis of the different packet forwarding behaviors of TSN and 5G leads to the conclusion that TSN-compliant scheduling in 5G can be achieved through a time-variant LCP according to the periodic stream requirements in the GCL. Dynamic Logical Channel Prioritization (dLCP) enables the execution of TSN-compliant traffic forwarding by native RAN mechanisms, thus avoiding the need to deploy additional H/F functions in the core or the UE. The functional complexity of the Translator Functions is reduced, while the scheduling framework of the RAN gains a new degree of freedom. The simulation of an exemplary downlink traffic scenario for multiple TSN streams over a single UE has shown that the traffic shaping requirements of a GCL can be met using dLCP if the available radio resources are sufficient.  
In subsequent work, we intend to evaluate which changes to the current 3 GPP standards are necessary in order to apply a dLCP in NG-RAN. Furthermore, it is necessary to determine the configuration process needed to set up TSN streams over 5G, to be be followed by an implementation and evaluation phase presupposing the existence of a Standalone 5G Software Defined Radio (SDR) solution. The open source 5G RAN and Core components released in Q1 2021 [31] by the OpenAirInterface Software Alliance are promising candidates for this purpose.  
Conceptualization, D.K. and B.V.; Methodology, D.K. and B.V.; Software, B.V. and D.K.; Validation, D.K. and B.V.; Investigation, D.K., B.V. and C.F.; Writing--original draft preparation, D.K. and B.V.; Writing--review and editing, D.K., B.V., and C.F.; Visualization, B.V.; Supervision, D.K. and H.D.S.; Project administration, D.K.; Funding acquisition, D.K. and H.D.S. All authors have read and agreed to the published version of the manuscript.  
This research received no external funding.  
Not applicable.  
The presented mechanism was implemented within the OpenAirInterface (OAI). The new and changed files regarding this implementation are publicly available as a GitHub Repository: [[https://github.com/DenKrysos/5G_TSN_Convergence](https://github.com/DenKrysos/5G_TSN_Convergence)]([https://github.com/DenKrysos/5G_TSN_Convergence](https://github.com/DenKrysos/5G_TSN_Convergence)) (accessed on 29 June 2022).  
The authors acknowledge financial support from the German Federal Ministry for Education and Research (BMBF) within the project \"Open6 GHub\" [16 KISK003K].  
The authors declare no conflict of interest.