PMID- 35957310
OWN - NLM
STAT- MEDLINE
DCOM- 20220815
LR  - 20220815
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 22
IP  - 15
DP  - 2022 Aug 1
TI  - Resource Allocation for Reconfigurable Intelligent Surface Assisted Dual 
      Connectivity.
LID - 10.3390/s22155755 [doi]
LID - 5755
AB  - The next generation 6G wireless systems are envisioned to have higher reliability 
      and capacity than the existing cellular systems. The reconfigurable intelligent 
      surfaces (RISs)-assisted wireless networks are one of the promising solutions to 
      control the wireless channel by altering the electromagnetic properties of the 
      signal. The dual connectivity (DC) increases the per-user throughput by utilizing 
      radio resources from two different base stations. In this work, we propose the 
      RIS-assisted DC system to improve the per-user throughput of the users by 
      utilizing resources from two base stations (BSs) in proximity via different RISs. 
      Given an alpha-fair utility function, the joint resource allocation and the user 
      scheduling of a RIS-assisted DC system is formulated as an optimization problem 
      and the optimal user scheduling time fraction is derived. A heuristic is proposed 
      to solve the formulated optimization problem with the derived optimal user 
      scheduling time fractions. Exhaustive simulation results for coverage and 
      throughput of the RIS-assisted DC system are presented with varying user, BS, 
      blockage, and RIS densities for different fairness values. Further, we show that 
      the proposed RIS-assisted DC system provides significant throughput gain of 52% 
      and 48% in certain scenarios when compared to the existing benchmark and DC 
      systems.
FAU - Ramamoorthi, Yoghitha
AU  - Ramamoorthi Y
AUID- ORCID: 0000-0001-5059-6832
AD  - NTT Access Network Service Systems Laboratories, Nippon Telegraph and Telephone 
      Corporation, Yokosuka 2390847, Japan.
FAU - Iwabuchi, Masashi
AU  - Iwabuchi M
AD  - NTT Access Network Service Systems Laboratories, Nippon Telegraph and Telephone 
      Corporation, Yokosuka 2390847, Japan.
FAU - Murakami, Tomoki
AU  - Murakami T
AD  - NTT Access Network Service Systems Laboratories, Nippon Telegraph and Telephone 
      Corporation, Yokosuka 2390847, Japan.
FAU - Ogawa, Tomoaki
AU  - Ogawa T
AD  - NTT Access Network Service Systems Laboratories, Nippon Telegraph and Telephone 
      Corporation, Yokosuka 2390847, Japan.
FAU - Takatori, Yasushi
AU  - Takatori Y
AD  - NTT Access Network Service Systems Laboratories, Nippon Telegraph and Telephone 
      Corporation, Yokosuka 2390847, Japan.
LA  - eng
PT  - Journal Article
DEP - 20220801
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
SB  - IM
MH  - *Algorithms
MH  - *Computer Communication Networks
MH  - Computer Simulation
MH  - Reproducibility of Results
MH  - Resource Allocation
PMC - PMC9370838
OTO - NOTNLM
OT  - RIS-assisted DC
OT  - base station
OT  - coverage
OT  - dual connectivity (DC)
OT  - fairness
OT  - reconfigurable intelligent surface (RIS)
OT  - resource allocation
OT  - throughput
OT  - user scheduling
COIS- The authors declare no conflict of interest.
EDAT- 2022/08/13 06:00
MHDA- 2022/08/16 06:00
PMCR- 2022/08/01
CRDT- 2022/08/12 01:22
PHST- 2022/06/30 00:00 [received]
PHST- 2022/07/25 00:00 [revised]
PHST- 2022/07/29 00:00 [accepted]
PHST- 2022/08/12 01:22 [entrez]
PHST- 2022/08/13 06:00 [pubmed]
PHST- 2022/08/16 06:00 [medline]
PHST- 2022/08/01 00:00 [pmc-release]
AID - s22155755 [pii]
AID - sensors-22-05755 [pii]
AID - 10.3390/s22155755 [doi]
PST - epublish
SO  - Sensors (Basel). 2022 Aug 1;22(15):5755. doi: 10.3390/s22155755.