On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO
The non-orthogonal coexistence between the enhanced mobile broadband (eMBB) and the ultra-reliable low-latency communication (URLLC) in the downlink of a multi-cell massive MIMO system is rigorously analyzed in this work. We provide a unified information-theoretic framework blending an infinite-bloc...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
|
| Series: | IEEE Open Journal of the Communications Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10102680/ |
| _version_ | 1797837404729507840 |
|---|---|
| author | Giovanni Interdonato Stefano Buzzi Carmen D'Andrea Luca Venturino Ciro D'Elia Paolo Vendittelli |
| author_facet | Giovanni Interdonato Stefano Buzzi Carmen D'Andrea Luca Venturino Ciro D'Elia Paolo Vendittelli |
| author_sort | Giovanni Interdonato |
| collection | DOAJ |
| description | The non-orthogonal coexistence between the enhanced mobile broadband (eMBB) and the ultra-reliable low-latency communication (URLLC) in the downlink of a multi-cell massive MIMO system is rigorously analyzed in this work. We provide a unified information-theoretic framework blending an infinite-blocklength analysis of the eMBB spectral efficiency (SE) in the ergodic regime with a finite-blocklength analysis of the URLLC error probability relying on the use of mismatched decoding, and of the so-called saddlepoint approximation. Puncturing (PUNC) and superposition coding (SPC) are considered as alternative downlink coexistence strategies to deal with the inter-service interference, under the assumption of only statistical channel state information (CSI) knowledge at the users. eMBB and URLLC performances are then evaluated over different precoding techniques and power control schemes, by accounting for imperfect CSI knowledge at the base stations, pilot-based estimation overhead, pilot contamination, spatially correlated channels, the structure of the radio frame, and the characteristics of the URLLC activation pattern. Simulation results reveal that SPC is, in many operating regimes, superior to PUNC in providing higher SE for the eMBB yet achieving the target reliability for the URLLC with high probability. Moreover, PUNC might cause eMBB service outage in presence of high URLLC traffic loads. However, PUNC turns to be necessary to preserve the URLLC performance in scenarios where the multi-user interference cannot be satisfactorily alleviated. |
| first_indexed | 2024-04-09T15:25:18Z |
| format | Article |
| id | doaj.art-e8eea36fa40e41cba77f713ee07cd30f |
| institution | Directory Open Access Journal |
| issn | 2644-125X |
| language | English |
| last_indexed | 2024-04-09T15:25:18Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Communications Society |
| spelling | doaj.art-e8eea36fa40e41cba77f713ee07cd30f2023-04-28T23:00:39ZengIEEEIEEE Open Journal of the Communications Society2644-125X2023-01-0141040105910.1109/OJCOMS.2023.326658110102680On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMOGiovanni Interdonato0https://orcid.org/0000-0002-6078-835XStefano Buzzi1https://orcid.org/0000-0003-0046-8968Carmen D'Andrea2https://orcid.org/0000-0002-9398-4111Luca Venturino3https://orcid.org/0000-0002-7742-4835Ciro D'Elia4Paolo Vendittelli5Department of Electrical and Information Engineering, University of Cassino and Southern Latium, Cassino, ItalyDepartment of Electrical and Information Engineering, University of Cassino and Southern Latium, Cassino, ItalyDepartment of Electrical and Information Engineering, University of Cassino and Southern Latium, Cassino, ItalyDepartment of Electrical and Information Engineering, University of Cassino and Southern Latium, Cassino, ItalyDepartment of Electrical and Information Engineering, University of Cassino and Southern Latium, Cassino, ItalyTIM S.p.A., Milan, ItalyThe non-orthogonal coexistence between the enhanced mobile broadband (eMBB) and the ultra-reliable low-latency communication (URLLC) in the downlink of a multi-cell massive MIMO system is rigorously analyzed in this work. We provide a unified information-theoretic framework blending an infinite-blocklength analysis of the eMBB spectral efficiency (SE) in the ergodic regime with a finite-blocklength analysis of the URLLC error probability relying on the use of mismatched decoding, and of the so-called saddlepoint approximation. Puncturing (PUNC) and superposition coding (SPC) are considered as alternative downlink coexistence strategies to deal with the inter-service interference, under the assumption of only statistical channel state information (CSI) knowledge at the users. eMBB and URLLC performances are then evaluated over different precoding techniques and power control schemes, by accounting for imperfect CSI knowledge at the base stations, pilot-based estimation overhead, pilot contamination, spatially correlated channels, the structure of the radio frame, and the characteristics of the URLLC activation pattern. Simulation results reveal that SPC is, in many operating regimes, superior to PUNC in providing higher SE for the eMBB yet achieving the target reliability for the URLLC with high probability. Moreover, PUNC might cause eMBB service outage in presence of high URLLC traffic loads. However, PUNC turns to be necessary to preserve the URLLC performance in scenarios where the multi-user interference cannot be satisfactorily alleviated.https://ieeexplore.ieee.org/document/10102680/Enhanced mobile broadbanderror probabilitymassive MIMOmismatched decodingnetwork availabilitynon-orthogonal multiple access |
| spellingShingle | Giovanni Interdonato Stefano Buzzi Carmen D'Andrea Luca Venturino Ciro D'Elia Paolo Vendittelli On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO IEEE Open Journal of the Communications Society Enhanced mobile broadband error probability massive MIMO mismatched decoding network availability non-orthogonal multiple access |
| title | On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO |
| title_full | On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO |
| title_fullStr | On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO |
| title_full_unstemmed | On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO |
| title_short | On the Coexistence of eMBB and URLLC in Multi-Cell Massive MIMO |
| title_sort | on the coexistence of embb and urllc in multi cell massive mimo |
| topic | Enhanced mobile broadband error probability massive MIMO mismatched decoding network availability non-orthogonal multiple access |
| url | https://ieeexplore.ieee.org/document/10102680/ |
| work_keys_str_mv | AT giovanniinterdonato onthecoexistenceofembbandurllcinmulticellmassivemimo AT stefanobuzzi onthecoexistenceofembbandurllcinmulticellmassivemimo AT carmendandrea onthecoexistenceofembbandurllcinmulticellmassivemimo AT lucaventurino onthecoexistenceofembbandurllcinmulticellmassivemimo AT cirodelia onthecoexistenceofembbandurllcinmulticellmassivemimo AT paolovendittelli onthecoexistenceofembbandurllcinmulticellmassivemimo |