PMID- 34071666
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210627
IS  - 1099-4300 (Electronic)
IS  - 1099-4300 (Linking)
VI  - 23
IP  - 6
DP  - 2021 May 28
TI  - Spectrum Slicing for Multiple Access Channels with Heterogeneous Services.
LID - 10.3390/e23060686 [doi]
LID - 686
AB  - Wireless mobile networks from the fifth generation (5G) and beyond serve as 
      platforms for flexible support of heterogeneous traffic types with diverse 
      performance requirements. In particular, the broadband services aim for the 
      traditional rate optimization, while the time-sensitive services aim for the 
      optimization of latency and reliability, and some novel metrics such as Age of 
      Information (AoI). In such settings, the key question is the one of spectrum 
      slicing: how these services share the same chunk of available spectrum while 
      meeting the heterogeneous requirements. In this work we investigated the two 
      canonical frameworks for spectrum sharing, Orthogonal Multiple Access (OMA) and 
      Non-Orthogonal Multiple Access (NOMA), in a simple, but insightful setup with a 
      single time-slotted shared frequency channel, involving one broadband user, 
      aiming to maximize throughput and using packet-level coding to protect its 
      transmissions from noise and interference, and several intermittent users, aiming 
      to either to improve their latency-reliability performance or to minimize their 
      AoI. We analytically assessed the performances of Time Division Multiple Access 
      (TDMA) and ALOHA-based schemes in both OMA and NOMA frameworks by deriving their 
      Pareto regions and the corresponding optimal values of their parameters. Our 
      results show that NOMA can outperform traditional OMA in latency-reliability 
      oriented systems in most conditions, but OMA performs slightly better in 
      age-oriented systems.
FAU - Chiariotti, Federico
AU  - Chiariotti F
AUID- ORCID: 0000-0002-7915-7275
AD  - Department of Electronic Systems, Aalborg University, Fredrik Bajers Vej 7C, 9100 
      Aalborg, Denmark.
FAU - Leyva-Mayorga, Israel
AU  - Leyva-Mayorga I
AUID- ORCID: 0000-0002-7116-397X
AD  - Department of Electronic Systems, Aalborg University, Fredrik Bajers Vej 7C, 9100 
      Aalborg, Denmark.
FAU - Stefanovic, Cedomir
AU  - Stefanovic C
AD  - Department of Electronic Systems, Aalborg University, Fredrik Bajers Vej 7C, 9100 
      Aalborg, Denmark.
FAU - Kalor, Anders E
AU  - Kalor AE
AD  - Department of Electronic Systems, Aalborg University, Fredrik Bajers Vej 7C, 9100 
      Aalborg, Denmark.
FAU - Popovski, Petar
AU  - Popovski P
AD  - Department of Electronic Systems, Aalborg University, Fredrik Bajers Vej 7C, 9100 
      Aalborg, Denmark.
LA  - eng
PT  - Journal Article
DEP - 20210528
PL  - Switzerland
TA  - Entropy (Basel)
JT  - Entropy (Basel, Switzerland)
JID - 101243874
PMC - PMC8228041
OTO - NOTNLM
OT  - Age of Information
OT  - Non-Orthogonal Multiple Access
OT  - heterogeneous access
OT  - reliability
OT  - slotted ALOHA
COIS- The authors declare no conflict of interest. The funders had no role in the 
      design of the study; in the collection, analyses, or interpretation of data; in 
      the writing of the manuscript, or in the decision to publish the results.
EDAT- 2021/06/03 06:00
MHDA- 2021/06/03 06:01
PMCR- 2021/05/28
CRDT- 2021/06/02 01:32
PHST- 2021/04/28 00:00 [received]
PHST- 2021/05/19 00:00 [revised]
PHST- 2021/05/25 00:00 [accepted]
PHST- 2021/06/02 01:32 [entrez]
PHST- 2021/06/03 06:00 [pubmed]
PHST- 2021/06/03 06:01 [medline]
PHST- 2021/05/28 00:00 [pmc-release]
AID - e23060686 [pii]
AID - entropy-23-00686 [pii]
AID - 10.3390/e23060686 [doi]
PST - epublish
SO  - Entropy (Basel). 2021 May 28;23(6):686. doi: 10.3390/e23060686.