Enhancing software-defined RAN with collaborative caching and scalable video coding

Ruozhou Yu, Shuang Qin, Mehdi Bennis, Xianfu Chen, Gang Feng, Zhu Han, Guoliang Xue

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

17 Citations (Scopus)

Abstract

The ever increasing video demands from mobile users have posed great challenges to cellular networks. To address this issue, video caching in radio access networks (RANs) has been recognized as one of the enabling technologies in future 5G mobile networks, which brings contents near the end-users, reducing the transmission cost of duplicate contents, meanwhile increasing the Quality-of-Experience (QoE) of users. Inspired by the emerging software-defined networking technology, recent proposals have employed centralized collaborative caching among cells to further increase the caching capacity of the RAN. In this paper, we explore a new dimension in video caching in software-defined RANs to expand its capacity. We enable the controller with the capability to adaptively select the bitrates of videos received by users, in order to maximize the number and quality of video requests that can be served, meanwhile minimizing the transmission cost. To achieve this, we further incorporate Scalable Video Coding (SVC), which enables caching and serving sliced video layers that can serve different bitrates. We formulate the problem of joint video caching and scheduling as a reward maximization (cost minimization) problem. Based on the formulation, we further propose a 2-stage rounding-based algorithm to address the problem efficiently. Simulation results show that using SVC with collaborative caching greatly improves the cache capacity and the QoE of users.
Original languageEnglish
Title of host publicationCommunications (ICC), 2016 IEEE International Conference on
PublisherInstitute of Electrical and Electronic Engineers IEEE
ISBN (Electronic)978-1-4799-6664-6
ISBN (Print)978-1-4799-6665-3
DOIs
Publication statusPublished - 14 Jul 2016
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Communications, ICC 2016 - Kuala Lumpur, Malaysia
Duration: 22 May 201627 May 2016

Publication series

Name
ISSN (Electronic)1938-1883

Conference

ConferenceIEEE International Conference on Communications, ICC 2016
Abbreviated titleICC 2016
CountryMalaysia
CityKuala Lumpur
Period22/05/1627/05/16

Fingerprint

Scalable video coding
Costs
Wireless networks
Scheduling
Controllers

Keywords

  • 5G mobile networks
  • collaborative video caching
  • scalable Video Coding
  • doftware-defined radio access network

Cite this

Yu, R., Qin, S., Bennis, M., Chen, X., Feng, G., Han, Z., & Xue, G. (2016). Enhancing software-defined RAN with collaborative caching and scalable video coding. In Communications (ICC), 2016 IEEE International Conference on Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/ICC.2016.7511029
Yu, Ruozhou ; Qin, Shuang ; Bennis, Mehdi ; Chen, Xianfu ; Feng, Gang ; Han, Zhu ; Xue, Guoliang. / Enhancing software-defined RAN with collaborative caching and scalable video coding. Communications (ICC), 2016 IEEE International Conference on. Institute of Electrical and Electronic Engineers IEEE, 2016.
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Yu, R, Qin, S, Bennis, M, Chen, X, Feng, G, Han, Z & Xue, G 2016, Enhancing software-defined RAN with collaborative caching and scalable video coding. in Communications (ICC), 2016 IEEE International Conference on. Institute of Electrical and Electronic Engineers IEEE, IEEE International Conference on Communications, ICC 2016, Kuala Lumpur, Malaysia, 22/05/16. https://doi.org/10.1109/ICC.2016.7511029

Enhancing software-defined RAN with collaborative caching and scalable video coding. / Yu, Ruozhou; Qin, Shuang; Bennis, Mehdi; Chen, Xianfu; Feng, Gang; Han, Zhu; Xue, Guoliang.

Communications (ICC), 2016 IEEE International Conference on. Institute of Electrical and Electronic Engineers IEEE, 2016.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Yu R, Qin S, Bennis M, Chen X, Feng G, Han Z et al. Enhancing software-defined RAN with collaborative caching and scalable video coding. In Communications (ICC), 2016 IEEE International Conference on. Institute of Electrical and Electronic Engineers IEEE. 2016 https://doi.org/10.1109/ICC.2016.7511029