Point Cloud Video Streaming: Challenges and Solutions

Volumetric media (or hologram video), the medium for representing natural content in VR/AR/MR, is presumably the next generation of video technology and a typical use case for 5G and beyond wireless communications. To realize volumetric media applications, efficient volumetric media streaming methods are in critical demand. To this end, this article studies the challenges for and solutions to wireless transmission systems of point cloud video, which is the most popular and favored way to represent volumetric media and significantly differs from the other types of videos. In particular, we first discuss point cloud video technology and its applications and then the challenges of and solutions to point cloud video streaming in 5G systems and beyond, including encoding, tiling, viewing angle prediction, decoding, quality assessment and transmission optimization. A prototype of DASH-based point cloud video streaming system is introduced as a preliminary study, along with more simulation results to verify the performance of the proposed scheme. Moreover, future research directions are identified for providing high-quality point cloud video streaming. <br>

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Point Cloud Video Streaming in 5G Systems and Beyond: Challenges and Solutions

10.36227/techrxiv.13138940.v1 ◽

2020 ◽

Author(s):

Zhi Liu ◽

Qiyue Li ◽

Xianfu Chen ◽

Celimuge Wu ◽

susumu ishihara ◽

...

Keyword(s):

Video Streaming ◽

Point Cloud ◽

Wireless Transmission ◽

Future Research ◽

Video Technology ◽

Research Directions ◽

Future Research Directions ◽

Preliminary Study ◽

5G Systems ◽

Media Applications

Volumetric media (or hologram video), the medium for representing natural content in VR/AR/MR, is presumably the next generation of video technology and a typical use case for 5G and beyond wireless communications. To realize volumetric media applications, efficient volumetric media streaming methods are in critical demand. To this end, this article studies the challenges for and solutions to wireless transmission systems of point cloud video, which is the most popular and favored way to represent volumetric media and significantly differs from the other types of videos. In particular, we first discuss point cloud video technology and its applications and then the challenges of and solutions to point cloud video streaming in 5G systems and beyond, including encoding, tiling, viewing angle prediction, decoding, quality assessment and transmission optimization. A prototype of DASH-based point cloud video streaming system is introduced as a preliminary study, along with more simulation results to verify the performance of the proposed scheme. Moreover, future research directions are identified for providing high-quality point cloud video streaming. <br>

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School Counselor Assignment in Secondary Schools

Professional School Counseling ◽

10.1177/2156759x0901300101 ◽

2009 ◽

Vol 13 (1) ◽

pp. 2156759X0901300

Author(s):

Patrick Akos ◽

Heidi Schuldt ◽

Meg Walendin

Keyword(s):

Secondary Schools ◽

School Counselors ◽

School Counselor ◽

Professional School ◽

Future Research ◽

Research Directions ◽

Secondary School Counselors ◽

Significant Difference ◽

Future Research Directions ◽

Preliminary Study

Research has not yet begun to investigate the practice or impact of school counselor assignment. A preliminary study sought to explore the nature and consequences of school counselor assignment practices in secondary schools. Secondary school counselors from one large Southeastern school district were asked to complete a questionnaire created for the purpose of this study. The results suggest a significant difference between school counselor assignment at the middle and high school levels. Middle schools predominantly utilized grade-level assignment while high schools used alphabetical assignment. Distinct advantages and challenges were indicated by school counselors from each assignment type. Implications for professional school counselors and future research directions are provided.

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Does Mind Wandering Mediate the Association Between Mindfulness and Negative Mood? A Preliminary Study

Psychological Reports ◽

10.1177/0033294116686036 ◽

2017 ◽

Vol 120 (1) ◽

pp. 118-129 ◽

Cited By ~ 6

Author(s):

Yuzheng Wang ◽

Wei Xu ◽

Capella Zhuang ◽

Xinghua Liu

Keyword(s):

Negative Mood ◽

Mind Wandering ◽

Future Research ◽

Trait Mindfulness ◽

Five Facet Mindfulness Questionnaire ◽

Research Directions ◽

Future Research Directions ◽

Preliminary Study ◽

The Relationship

The aim of this study was to assess the relationship between trait mindfulness and mood and to examine whether the relationship is mediated by mind wandering. Eighty-two individuals ( M age = 24.27 years, SD = 5.64, 18 men, 22%) completed a series of measures including the Five-Facet Mindfulness Questionnaire, the Profile of Mood States Questionnaire, and Meditation Breath Attention Exercise. Results showed that the level of mindfulness was significantly correlated with positive and negative mood, and the association between mindfulness and negative mood was mediated by mind wandering. This study indicated the important role of mind wandering in the relation between mindfulness and negative mood. Limitations and future research directions are discussed.

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Software Networks at the Edge

Advances in Wireless Technologies and Telecommunication - Evolution of Cognitive Networks and Self-Adaptive Communication Systems ◽

10.4018/978-1-4666-4189-1.ch008 ◽

2013 ◽

pp. 199-226 ◽

Cited By ~ 2

Author(s):

Antonio Manzalini ◽

Roberto Minerva ◽

Noel Crespi ◽

Uddin Shah Muhammad Emad

Keyword(s):

Software Defined Networking ◽

Future Research ◽

Use Case ◽

Research Directions ◽

Future Networks ◽

Network Flexibility ◽

Future Research Directions ◽

Network Functions ◽

Simulation Results ◽

Interacting Networks

The chapter addresses the potential impact of technologies like Autonomic, Cognitive, and Software Defined Networking on future networks evolution. It is argued that said technologies, coupled with a wide adoption of virtualization, will bring an impactful disruption at the edge of current networks: in less than a decade developing distributed clouds of cheap edge nodes powerful enough to run virtualized network functions and services on standard hardware will be possible. This will improve network flexibility and programmability, creating the conditions for the development of new Telco-ICT ecosystems. The edge will become a business arena with multiple interacting networks and domains operated by diverse players. We are already witnessing this transformation, looking at the shift of value towards the users’ terminals. The chapter elaborates this vision, reports a brief overview of the state of the art of enabling technologies, describes some simulation results of a use-case, and concludes by providing future research directions.

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