Abstract
Digital twins are becoming a key technology in
evaluating hardware and system performance in wireless communications. The explosion of new use cases in time-sensitive, safety critical scenarios and the stringent requirements for new communication standards are creating a demand for repeatable and cost-effective verification methodologies. In this paper we
propose a methodology for building site-specific digital twins of wireless vehicular communication links, enabling us to obtain
time-variant packet error rates and asses the link reliability in safety-critical vehicular communications scenarios. The digital
twin utilizes a real-time geometry-based stochastic channel model to simulate doubly selective channel frequency responses. The
frequency responses are used as input to a hardware-in-theloop setup, to obtain time-variant packet error rates between two commercial modems. We demonstrate the functionality of the proposed approach by developing a digital twin of a multi-link vehicular scenario. Based on time-critical application requirements we use the obtained error rates to estimate the 90 % tail probability of the link level latency. In our assessment of the obtained metrics, we see how a geo-routing scenario, combining a shadowed with a relay link, can be used to increase the link reliability and reduce link latency.
evaluating hardware and system performance in wireless communications. The explosion of new use cases in time-sensitive, safety critical scenarios and the stringent requirements for new communication standards are creating a demand for repeatable and cost-effective verification methodologies. In this paper we
propose a methodology for building site-specific digital twins of wireless vehicular communication links, enabling us to obtain
time-variant packet error rates and asses the link reliability in safety-critical vehicular communications scenarios. The digital
twin utilizes a real-time geometry-based stochastic channel model to simulate doubly selective channel frequency responses. The
frequency responses are used as input to a hardware-in-theloop setup, to obtain time-variant packet error rates between two commercial modems. We demonstrate the functionality of the proposed approach by developing a digital twin of a multi-link vehicular scenario. Based on time-critical application requirements we use the obtained error rates to estimate the 90 % tail probability of the link level latency. In our assessment of the obtained metrics, we see how a geo-routing scenario, combining a shadowed with a relay link, can be used to increase the link reliability and reduce link latency.
| Original language | English |
|---|---|
| Title of host publication | IEEE Global Communications Conference (GLOBECOM) |
| Pages | 1-6 |
| Number of pages | 6 |
| Publication status | Published - 2022 |
| Event | 2022 IEEE Global Communications Conference (GLOBECOM) - Duration: 4 Dec 2022 → 8 Dec 2022 |
Conference
| Conference | 2022 IEEE Global Communications Conference (GLOBECOM) |
|---|---|
| Period | 4/12/22 → 8/12/22 |
Research Field
- Enabling Digital Technologies