Journal of China Universities of Posts and Telecommunications最新文献_第3页

Mobility driven network slicing: an enabler of on demand mobility management for 5G 移动驱动的网络切片：5G随需应变移动管理的推动者

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60219-X

Wang Hucheng , Chen Shanzhi , Ai Ming , Shi Yan

{"title":"Mobility driven network slicing: an enabler of on demand mobility management for 5G","authors":"Wang Hucheng , Chen Shanzhi , Ai Ming , Shi Yan","doi":"10.1016/S1005-8885(17)60219-X","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60219-X","url":null,"abstract":"<div><h3>Abstract</h3><p>As different requirements on mobility support will be introduced by diversified communication scenarios in the fifth generation (5G), on demand mobility management is put forward to simplify signaling process, reduce terminal power consumption, improve network efficiency and so on. In order to enable on demand mobility management in 5G networks, a mobility driven network slicing (MDNS) was proposed, which takes individual mobility support requirements into account while customizing networks for different mobile services. Within the MDNS framework, the actual levels of required mobility support are determined by a mobility description system, and network slice templates with the corresponding mobility management schemes are defined by a network slice description function. By instantiating the network slices, each mobile terminal could be directed to the network slice with the most appropriate mobility management scheme. Based on this, a prototype was implemented to validate the feasibility of MDNS framework, i.e. creating multiple network slices with different mobility management schemes. In addition, the performance evaluation on average cost of processing a mobility event is conducted for the proposed MDNS framework and the long term evolution (LTE) system, and operating benefits are analyzed including efficiency and scalability.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 4","pages":"Pages 16-26"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60219-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72233480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Autonomous parking control for intelligent vehicles based on a novel algorithm 基于一种新算法的智能汽车自动停车控制

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60223-1

Gao Hongbo , Xie Guotao , Zhang Xinyu , Cheng Bo

引用次数: 10

Improving throughput through dynamically tuning contention window size in dense wireless network 在密集型无线网络中通过动态调整争用窗口大小来提高吞吐量

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60220-6

Lin Shangjuan, Wen Xiangming, Hu Zhiqun, Lu Zhaoming

引用次数: 2

Correlation-based identification approach for multimodal biometric fusion 基于相关性的多模式生物特征融合识别方法

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60221-8

Ma Xin, Jing Xiaojun

引用次数: 14

Power savings in software defined data center networks via modified hybrid genetic algorithm 基于改进混合遗传算法的软件定义数据中心网络节能

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60226-7

Xie Kun , Huang Xiaohong , Ma Maode , Zhang Pei

{"title":"Power savings in software defined data center networks via modified hybrid genetic algorithm","authors":"Xie Kun , Huang Xiaohong , Ma Maode , Zhang Pei","doi":"10.1016/S1005-8885(17)60226-7","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60226-7","url":null,"abstract":"<div><h3>Abstract</h3><p>In modern data centers, power consumed by network is an observable portion of the total energy budget and thus improving the energy efficiency of data center networks (DCNs) truly matters. One effective way for this energy efficiency is to make the size of DCNs elastic along with traffic demands by flow consolidation and bandwidth scheduling, i.e., turning off unnecessary network components to reduce the power consumption. Meanwhile, having the instinct support for data center management, software defined networking (SDN) provides a paradigm to elastically control the resources of DCNs. To achieve such power savings, most of the prior efforts just adopt simple greedy heuristic to reduce computational complexity. However, due to the inherent problem of greedy algorithm, a good-enough optimization cannot be always guaranteed. To address this problem, a modified hybrid genetic algorithm (MHGA) is employed to improve the solution's accuracy, and the fine-grained routing function of SDN is fully leveraged. The simulation results show that more efficient power management can be achieved than the previous studies, by increasing about 5% of network energy savings.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 4","pages":"Pages 76-86"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60226-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72270484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Color image detail enhancement based on quaternion guided filter 基于四元数导引滤波器的彩色图像细节增强

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60222-X

Wu Kun , Li Guiju , Han Guangliang , Yang Hang , Liu Peixun

{"title":"Color image detail enhancement based on quaternion guided filter","authors":"Wu Kun , Li Guiju , Han Guangliang , Yang Hang , Liu Peixun","doi":"10.1016/S1005-8885(17)60222-X","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60222-X","url":null,"abstract":"<div><h3>Abstract</h3><p>Color image enhancement is an active research field in image processing. Currently, many image enhancement methods are capable of enhancing the details of the color image. However, these methods only process the red, green and blue (RGB) color channels separately, which leads to color distortion easily. In order to overcome this problem, the paper presents an approach to integrate the quaternion theory into the traditional guided filter to obtain a quaternion guided filter (QGF). This method makes full use of the color information of an image to realize the holistic processing of RGB color channels. So as to preserve color information while enhancing details, this paper proposes a color image detail enhancement algorithm based on the QGF. Experimental results show that the proposed algorithm is effective in the applications of the color image detail enhancement, and enables image's edges to be more prominent and texture clearer while avoiding color distortion. Compared with the existing image enhancement methods, the proposed method achieves better enhancement performance in terms of the visual quality and the objective evaluating indicators.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 4","pages":"Pages 40-50"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60222-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72263779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Area-efficient analog decoder design for low density parity check codes in deep-space applications 深空应用中低密度奇偶校验码的区域有效模拟解码器设计

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60225-5

Zhao Zhe, Gao Fei, Zheng Hao, Yin Xue

{"title":"Area-efficient analog decoder design for low density parity check codes in deep-space applications","authors":"Zhao Zhe, Gao Fei, Zheng Hao, Yin Xue","doi":"10.1016/S1005-8885(17)60225-5","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60225-5","url":null,"abstract":"<div><h3>Abstract</h3><p>Area-efficient design methodology is proposed for the analog decoding implementations of the rate-½ accumulate repeat-4 jagged-accumulate (AR4JA) low density parity check (LDPC) code. The proposed approach is designed using optimized decoding architecture and regularized routing network, in such a way that the overall wiring overhead is minimized and the silicon area utilization is significantly improved. The prototyping chip used to verify the approach is fully integrated in a four-metal double-poly 0.35 μm complementary metal oxide semiconductor (CMOS) technology, and includes an input-output interface that maximizes the decoder throughput. The decoding core area is 2.02 mm<sup>2</sup> with a post-layout area utilization of 80%. The decoder was successfully tested at the maximum data rate of 10 Mbit/s, with a core power consumption of 6.78 mW at 3.3 V, which corresponds to an energy per decoded bit of 0.677 nJ. The proposed analog LDPC decoder with low processing power and high-reliability is suitable for space- and power-constrained spacecraft system.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 4","pages":"Pages 69-75"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60225-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72263775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Generalized binary discernibility matrix for attribute reduction in incomplete information systems 不完全信息系统属性约简的广义二进制可分辨矩阵

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-08-01 Epub Date: 2017-12-05 DOI: 10.1016/S1005-8885(17)60224-3

Ma Fumin , Zhang Tengfei

{"title":"Generalized binary discernibility matrix for attribute reduction in incomplete information systems","authors":"Ma Fumin , Zhang Tengfei","doi":"10.1016/S1005-8885(17)60224-3","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60224-3","url":null,"abstract":"<div><h3>Abstract</h3><p>To extract and express the knowledge hidden in information systems, discernibility matrix and its extensions were introduced and applied successfully in many real life applications. Binary discernibility matrix, as a representative approach, has many interesting superior properties and has been rapidly developed to find intuitive and easy to understand knowledge. However, at present, the binary discernibility matrix is mainly adopted in the complete information system. It is a challenging topic how to achieve the attribute reduction by using binary discernibility matrix in incomplete information system. A form of generalized binary discernibility matrix is further developed for a number of representative extended rough set models that deal with incomplete information systems. Some useful properties and criteria are introduced for judging the attribute core and attribute relative reduction. Thereafter, a new algorithm is formulated which supports attribute core and attribute relative reduction based on the generalized binary discernibility matrix. This algorithm is not only suitable for consistent information systems but also inconsistent information systems. The feasibility of the proposed methods was demonstrated by worked examples and experimental analysis.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 4","pages":"Pages 57-68, 75"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60224-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72263776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Study of matching model between tariff package and user behavior 资费套餐与用户行为匹配模型研究

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-06-01 Epub Date: 2017-09-22 DOI: 10.1016/S1005-8885(17)60216-4

Xiao Shuochen, Ning Lianju, Zhuang Wenying

引用次数: 4

Analyzing the dynamics of online video popularity 网络视频流行动态分析

Journal of China Universities of Posts and Telecommunications Pub Date : 2017-06-01 Epub Date: 2017-09-22 DOI: 10.1016/S1005-8885(17)60212-7

Ouyang Shuxin , Li Chenyu , Li Xueming

{"title":"Analyzing the dynamics of online video popularity","authors":"Ouyang Shuxin , Li Chenyu , Li Xueming","doi":"10.1016/S1005-8885(17)60212-7","DOIUrl":"https://doi.org/10.1016/S1005-8885(17)60212-7","url":null,"abstract":"<div><p>Given the large volume of video content and the diversity of user attention, it is of great importance to understand the characteristics of online video popularity for technological, economic and social reasons. In this paper, based on the data collected from a leading online video service provider in China, namely Youku, the dynamics of online video popularity are analyzed in-depth from four key aspects: overall popularity distribution, individual popularity distribution, popularity evolution pattern and early-future popularity relationship. How the popularity of a set of newly upload videos distributes throughout the observation period is first studied. Then the notion of active days is proposed, and the per-day and per-hour popularity distributions of individual videos are carefully studied. Next, how the popularity of an individual video evolves over time is investigated. The evolution patterns are further defined according to the number and temporal locations of popularity bursts, in order to describe the popularity growth trend. At last, the linear relationship between early video popularity and future video popularity are examined on a log-log scale. The relationship is found to be largely impacted by the popularity evolution patterns. Therefore, the specialized models are proposed to describe the correlation according to the popularity evolution patterns. Experiment results show that specialized models can better fit the correlation than a general model. Above all, the analysis results in our work can provide direct help in practical for the interested parties of online video service such as service providers, online advisers, and network operators.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"24 3","pages":"Pages 58-69"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(17)60212-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72232590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3