H. Saarnisaari and C. M. de Lima, "5G NR over Satellite Links: Evaluation of Synchronization and Random Access Processes," 2019 21st International Conference on Transparent Optical Networks (ICTON), Angers, France, 2019, pp. 1-4. doi: 10.1109/ICTON.2019.8840369
5G NR over satellite links : evaluation of synchronization and random access processes
|Author:||Saarnisaari, Harri1; de Lima, Carlos Morais1|
1University of Oulu, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019101633256
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2019-10-16
Integration of 5G new radio (NR) access interface with satellite technology is an ongoing task in the standardization bodies. Since 5G NR was originally designed as a terrestrial system, its direct suitability to satellite communications has yet to be carefully evaluated. In that regard, the initial synchronization and random access processes are among the topics of particular interest. This paper overviews these key processes by first identifying problematic points and then proposing feasible solutions. It is shown that initial synchronization and related data demodulation of the 5G NR synchronization block is possible using dedicated large frequency shift aware receivers. In addition, it is shown that timing advance value, which is a part of the random access process, has to be extended to cover satellite delays. A few ways to do this are discussed in the paper, as well as ways to reduce capacity loss due to required large guard interval of the 5G NR random access signal.
Conference proceedings : International Conference on Transparent Optical Networks
|Pages:||1 - 4|
2019 21st International Conference on Transparent Optical Networks (ICTON). 9-13 July 2019, Angers, France
International Conference on Transparent Optical Networks
|Type of Publication:||
B3 Article in conference pro-ceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This paper is based on results obtained in the Horizon 2020 SaT5G project under grant agreement No 761413 that aims to study integration of satellite and 5G terrestrial systems in a wide sense, from many angles. This research has also been supported by Academy of Finland 6Genesis Flagship (grant 318927).
|EU Grant Number:||
(761413) SaT5G - Satellite and Terrestrial Network for 5G
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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