@inproceedings{oai:ipsj.ixsq.nii.ac.jp:00193540,
 author = {Ben, Ruktantichoke and Vorapong, Suppakitpaisarn and Kaoru, Sezaki and Ben, Ruktantichoke and Vorapong, Suppakitpaisarn and Kaoru, Sezaki},
 book = {マルチメディア，分散協調とモバイルシンポジウム2018論文集},
 month = {Jun},
 note = {Multi-user virtual reality (VR) applications require stable networks over time to deliver high quality untethered VR. This imposes tighter requirements on the underlying network which have been neglected by previous studies. Our work focuses on millimeter wave wireless networks formed by users co-located in a VR playground. Wireless VR requires 60 GHz signals to support the required bandwidth. However, high frequency signals are susceptible to obstacle blockage, and relaying is necessary for dealing with blockage scenarios that change much more rapidly than in general mobile networks. Our work develops stable relay methods to overcome this issue. A relay scheme can be conceived by matching nodes that have line of sight to the AP with nodes that are blocked. We modify existing matching algorithms to prioritize established links and propose our own group matching for prolonging network stability. Our modified matching algorithms reduce the amount of rerouting required in Xu’s relay method by 61.8% and Zeng’s relay method by 55.6% on average. Our proposed group matching algorithm outperforms the modified algorithms and requires only 2.73% of nodes to be rerouted at each timestep. Our numerical results indicate that prioritizing established links in relay virtual reality networks significantly improves network stability over time., Multi-user virtual reality (VR) applications require stable networks over time to deliver high quality untethered VR. This imposes tighter requirements on the underlying network which have been neglected by previous studies. Our work focuses on millimeter wave wireless networks formed by users co-located in a VR playground. Wireless VR requires 60 GHz signals to support the required bandwidth. However, high frequency signals are susceptible to obstacle blockage, and relaying is necessary for dealing with blockage scenarios that change much more rapidly than in general mobile networks. Our work develops stable relay methods to overcome this issue. A relay scheme can be conceived by matching nodes that have line of sight to the AP with nodes that are blocked. We modify existing matching algorithms to prioritize established links and propose our own group matching for prolonging network stability. Our modified matching algorithms reduce the amount of rerouting required in Xu’s relay method by 61.8% and Zeng’s relay method by 55.6% on average. Our proposed group matching algorithm outperforms the modified algorithms and requires only 2.73% of nodes to be rerouted at each timestep. Our numerical results indicate that prioritizing established links in relay virtual reality networks significantly improves network stability over time.},
 pages = {736--746},
 publisher = {情報処理学会},
 title = {Prolonging Network Stability in Relay Virtual Reality Networks},
 volume = {2018},
 year = {2018}
}