Uplink Resource Allocation for Shared LTE and SCMA IoT Systems

The fifth generation (5G) wireless communication technologies are analyzing non-orthogonal multiple access (NOMA) methods to facilitate the Internet of things (IoT) scenarios hosting a large number of users. In this paper, we consider a scenario where the network operator shares the uplink spectrum between the original long term evolution (LTE) users and new users using a code-domain NOMA technique called sparse code multiple access (SCMA). Since obtaining the optimal solution for resource allocation in such systems is exponentially complex, we propose heuristic algorithms for LTE and SCMA, with the objective of maximizing the overall achievable rate in the network. The simulation results indicate that the performance of the proposed algorithms is close to 90% of that of the optimal solution.

[1]  Naveen Mysore Balasubramanya,et al.  Near-optimal resource block and power allocation mechanisms in uplink for LTE and LTE-Advanced , 2014, 2014 IEEE Globecom Workshops (GC Wkshps).

[2]  Alireza Bayesteh,et al.  SCMA Codebook Design , 2014, 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall).

[3]  Alireza Bayesteh,et al.  Uplink contention based SCMA for 5G radio access , 2014, 2014 IEEE Globecom Workshops (GC Wkshps).

[4]  Hosein Nikopour,et al.  Sparse code multiple access , 2013, 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).

[5]  Antti Toskala,et al.  LTE for UMTS: Evolution to LTE-Advanced , 2011 .

[6]  Markus Rupp,et al.  Exploring the physical layer frontiers of cellular uplink , 2015, EURASIP J. Wirel. Commun. Netw..

[7]  Oghenekome Oteri,et al.  Optimal resource allocation in uplink SC-FDMA systems , 2009, IEEE Transactions on Wireless Communications.

[8]  Lingyang Song,et al.  Radio resource allocation for uplink sparse code multiple access (SCMA) networks using matching game , 2016, 2016 IEEE International Conference on Communications (ICC).

[9]  George K. Karagiannidis,et al.  A Survey on Non-Orthogonal Multiple Access for 5G Networks: Research Challenges and Future Trends , 2017, IEEE Journal on Selected Areas in Communications.

[10]  Xingqin Lin,et al.  A Primer on 3GPP Narrowband Internet of Things , 2016, IEEE Communications Magazine.

[11]  Cheng Li,et al.  A resource scheduling scheme based on feed-back for SCMA grant-free uplink transmission , 2017, 2017 IEEE International Conference on Communications (ICC).

[12]  Lei Liu,et al.  Resource allocation in device-to-device communication underlaid cellular network using SCMA: An opportunistic approach , 2015, 2015 IEEE/CIC International Conference on Communications in China (ICCC).

[13]  Shuangfeng Han,et al.  Non-orthogonal multiple access for 5G: solutions, challenges, opportunities, and future research trends , 2015, IEEE Communications Magazine.