计算机科学 ›› 2016, Vol. 43 ›› Issue (4): 58-63.doi: 10.11896/j.issn.1002-137X.2016.04.012
纪传伟,白光伟,沈航,邹露宁
JI Chuan-wei, BAI Guang-wei, SHEN Hang and ZOU Lu-ning
摘要： 现有的移动视频通话研究大多集中在视音频同步、码率调整和能量节约等方面,忽视了用户在公共AP间切换时视频通话服务的中断重连问题。针对这一问题,提出了基于微云的移动视频预取系统来尽可能地减少通话重连次数。该系统通过本地微云为移动的用户预取视频流,并设计贪心预取算法来提高预取命中率。同时,设计低概率多阶马尔科夫预取进程调度算法和起始AP选择算法来平衡贪心预取引起的微云资源消耗过多的问题。仿真实验表明,CMVP可以获得90%以上的预取命中率,使QoE显著提升。
| [1] Yeh C H,Jiang S J F,Lin C Y,et al.Temporal video transcoding based on frame complexity analysis for mobile video communication[J].IEEE Transactions on Broadcasting,2013,59(1):38-46 [2] Wang Meng-si,Song Xiao,Lei Quan,et al.A power-efficientcloud-based compressive sensing video communication system[C]∥Procee-dings of Signal and Information Processing Association Annual Summit and Conference (APSIPA).Asia-Pacific,2013:1-4 [3] Qadeer M A,Shah K,Goel U.Voice-Video Communication on Mobile Phones and PCs′ Using Asterisk EPBX[C]∥Proceedings of Communication Systems and Network Technologies (CSNT).Rajkot,2012:534-538 [4] 移动视频通信应用下载.http://shouji.baidu.com/s?wd=%D2%C6%B6%AF%CA%D3%C6%B5%CD%A8%BB%B0&data_type=app&from=web_alad_5 [5] Ramzan N,Park H,Izquierdo E.Video streaming over P2P networks:Challenges and opportunities[J].Signal Processing:Ima-ge Communication,2012,27(5):401-411 [6] Miao Dan,Zhu Wen-wu,Luo Chong,et al.Resource allocation for cloud-based free viewpoint video rendering for mobile phones[C]∥Proceedings of the 19th ACM international conference on Multimedia.Scottsdale,2011:1237-1240 [7] Li Ji-wei,Bu Kai,Liu Xuan,et al.ENDA:embracing network inconsistency for dynamic application offloading in mobile cloud computing[C]∥Proceedings of the Second ACM SIGCOMM Workshop on Mobile Cloud Computing.HongKong,2013:39-44 [8] Xiong Hao-yi,Zhang Da-qing,Gauthier V,et al.Predicting mobile phone user locations by exploiting collective behavioral patterns[C]∥Proceedings of Ubiquitous Intelligence & Computing and 9th International Conference on Autonomic & Trusted Computing (UIC/ATC).Fukuoka,2012:164-171 [9] Papandrea M,Giordano S.Location prediction and mobility mo-delling for enhanced localization solution[J].Journal of Ambient Intelligence and Humanized Computing,2014,5(3):279-295 [10] Garcia M,Canovas A,Edo M,et al.A QoE management system for ubiquitous IPTV devices[C]∥Proceedings of the Third International Conference on Mobile Ubiquitous Computing,Systems,Services and Technologies (UBICOMM).Sliema,2009:147-152 [11] Lin Chuang,Hu Jie,Kong Xiang-zhen.Survey on Models and Evaluation of Quality of Experience[J].Chinese Journal of Computer,2012,35(1):1-15(in Chinese) 林闯,胡杰,孔祥震.用户体验质量(QoE)的模型与评价方法综述[J].计算机学报,2012,35(1):1-15 [12] Qi Xin,Yang Qing,Nguyen D T,et al.Context-aware frame rate adaption for video chat on smartphones[C]∥Proceedings of the ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication.Zurich,2013:111-114 [13] Liu Yun-hao,Yang Zheng,Wang Xiao-ping,et al.Location,localization,and localizability[J].Journal of Computer Science and Technology,2010,25(2):274-297 |
| No related articles found! |
|
||
首页