A novel scheduling algorithm to maximize the D2D spatial reuse in LTE networks

Akilesh, B and Sathya, V and Ramamurthy, A and Tamma, Bheemarjuna Reddy (2016) A novel scheduling algorithm to maximize the D2D spatial reuse in LTE networks. In: IEEE International Conference on Advanced Networks and Telecommunications Systems, ANTS 2016, 6-9 November, 2016, Bangalore; India.

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In order to offload base station (BS) traffic and to enhance efficiency of spectrum, operators can activate many Device-to-Device (D2D) pairs or links in LTE networks. This increases the overall spectral efficiency because the same Resource Blocks (RBs) are used across cellular UEs (CUEs) (i.e., all UEs connected to BS for both C-Plane and D-plane communication) and D2D links (i.e., where the UEs are connected to BS only for C-plane communication). However, significant interference problems can be caused by D2D communications as the same RBs are being shared. In our work, we address this problem by proposing a novel scheduling algorithm, Efficient Scheduling and Power control Algorithm for D2Ds (ESPAD), which reuses the same RBs and tries to maximize the overall network throughput without affecting the CUEs throughput. ESPAD algorithm also ensures that Signal to Noise plus Interference Ratio (SINR) for each of the D2D links is maintained above a certain predefined threshold. The aforementioned properties of ESPAD algorithm makes sure that the CUEs do not experience very high interference from the D2Ds. It is observed that even when the SINRdrop (i.e., maximum permissible drop in SINR of CUEs) is as high as 10 dB, there is no drastic decrease in CUEs throughput (only 3.78%). We also compare our algorithm against other algorithms and show that D2D throughput improves drastically without undermining CUEs throughput.

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IITH Creators:
IITH CreatorsORCiD
Tamma, Bheemarjuna ReddyUNSPECIFIED
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Efficiency, Power control, Scheduling algorithms, Signal interference, Signal to noise ratio, Spurious signal noise, Throughput
Subjects: Computer science > Wireless Networks
Divisions: Department of Computer Science & Engineering
Depositing User: Team Library
Date Deposited: 24 Jul 2017 09:00
Last Modified: 07 Sep 2017 09:35
URI: http://raiith.iith.ac.in/id/eprint/3424
Publisher URL: https://doi.org/10.1109/ANTS.2016.7947814
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