TY - JOUR
T1 - Fundamental Tradeoffs of Non-Orthogonal Multicast, Multicast, and Unicast in Ultra-Dense Networks
AU - Zhang, Zhengquan
AU - Ma, Zheng
AU - Xiao, Ming
AU - Lei, Xianfu
AU - Ding, Zhiguo
AU - Fan, Pingzhi
N1 - Funding Information:
Manuscript received July 30, 2017; revised January 28, 2018 and March 18, 2018; accepted March 19, 2018. Date of publication March 29, 2018; date of current version August 14, 2018. This work was supported by the NSFC project under Grant 61571373, U1734209, U1709219, and 61501382, by the NSFC China-Swedish Project under Grant 6161101297, by the Key International Cooperation Project of Sichuan Province under Grant 2017HH0002, and by the 111 Project under Grant 111-2-14. The work of Z. Ma was supported in part by the EU Marie Sklodowska-Curie individual Fellowship (No. 796426). The work of X. Lei was supported in part by the Sichuan International Science and Technology Cooperation Project under Grant 2017HH0035 and by the open research fund of the National Mobile Communications Research Laboratory, Southeast University, under Grant 2017D15. The work of Z. Ding was supported in part by the UK EPSRC under Grant EP/N005597/1 and by H2020-MSCA-RISE-2015 under Grant 690750. The associate editor coordinating the review of this paper and approving it for publication was M. C. Gursoy. (Corresponding author: Zheng Ma.) Z. Zhang, Z. Ma, and P. Fan are with the Key Laboratory of Information Coding and Transmission, Southwest Jiaotong University, Chengdu 610031, China (e-mail: [email protected]; [email protected]; [email protected]).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2018/8
Y1 - 2018/8
N2 - Ultra-dense networks (UDNs) are the promising technology for the fifth-generation wireless networks and beyond to significantly boost network capacity and improve network coverage by exploiting spatial spectrum reuse through the deployment of massive base stations (BSs). In this paper, the fundamental tradeoffs of non-orthogonal multicast, multicast, and unicast in the UDN are studied, to understand the impact of network densitification on them and provide some insights on UDN deployment. Non-orthogonal multicast with imperfect channel estimation and successive interference cancellation is also investigated. To evaluate the performance, a tractable model for performance analysis is developed by using stochastic geometry, and then the analytical expressions for downlink signal-to-interference-plus-noise ratio coverage probability, spectrum efficiency, area traffic capacity, and energy efficiency are derived. The numerical results together with the Monte Carlo simulations are also provided. The results demonstrate that non-orthogonal multicast can further improve the performance of multicast and achieve higher spectrum efficiency, area traffic capacity, and energy efficiency than unicast from the low-to-high BS density regions, but suffers from inferior performance to unicast in the very high BS density region. The results also show that the non-orthogonal multicast and multicast exhibit different performance trends from unicast.
AB - Ultra-dense networks (UDNs) are the promising technology for the fifth-generation wireless networks and beyond to significantly boost network capacity and improve network coverage by exploiting spatial spectrum reuse through the deployment of massive base stations (BSs). In this paper, the fundamental tradeoffs of non-orthogonal multicast, multicast, and unicast in the UDN are studied, to understand the impact of network densitification on them and provide some insights on UDN deployment. Non-orthogonal multicast with imperfect channel estimation and successive interference cancellation is also investigated. To evaluate the performance, a tractable model for performance analysis is developed by using stochastic geometry, and then the analytical expressions for downlink signal-to-interference-plus-noise ratio coverage probability, spectrum efficiency, area traffic capacity, and energy efficiency are derived. The numerical results together with the Monte Carlo simulations are also provided. The results demonstrate that non-orthogonal multicast can further improve the performance of multicast and achieve higher spectrum efficiency, area traffic capacity, and energy efficiency than unicast from the low-to-high BS density regions, but suffers from inferior performance to unicast in the very high BS density region. The results also show that the non-orthogonal multicast and multicast exhibit different performance trends from unicast.
KW - multicast
KW - non-orthogonal transmission
KW - stochastic geometry
KW - Ultra-dense networks
UR - http://www.scopus.com/inward/record.url?scp=85044714192&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2018.2820697
DO - 10.1109/TCOMM.2018.2820697
M3 - Article
AN - SCOPUS:85044714192
SN - 0090-6778
VL - 66
SP - 3555
EP - 3570
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 8
M1 - 8327866
ER -
