2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM)最新文献_第5页

Recouping opportunistic gain in dense base station layouts through energy-aware user cooperation 通过节能用户合作，回收密集基站布局中的机会收益

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583397

Qing Wang, Balaji Rengarajan

{"title":"Recouping opportunistic gain in dense base station layouts through energy-aware user cooperation","authors":"Qing Wang, Balaji Rengarajan","doi":"10.1109/WoWMoM.2013.6583397","DOIUrl":"https://doi.org/10.1109/WoWMoM.2013.6583397","url":null,"abstract":"To meet the increasing demand for wireless capacity, future networks are likely to consist of dense layouts of small cells. Thus, the number of concurrent users served by each base station (BS) is likely to be small which results in diminished gains from opportunistic scheduling, particularly under dynamic traffic loads. We propose user-initiated BS-transparent traffic spreading that leverages user-to-user communication to increase BS scheduling flexibility. The proposed scheme is able to increase opportunistic gains and improve user performance. For a specified tradeoff between performance and power expenditure, we characterize the optimal policy by modeling the system as a Markov decision process and also present a heuristic algorithm that yields significant performance gains. Our simulations show that, in the performance-centric case, average file transfer delays are lowered by up to 20% even in homogeneous scenarios, and up to 50% with heterogeneous users. Further, we show that the bulk of the performance improvement can be achieved with a small increase in power expenditure, e.g., in an energy-sensitive case, up to 78% of the performance improvement can be typically achieved at only 20% of the power expenditure of the performance-centric case.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114384561","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: 39

Characterization of wireless propagation in complex indoor scenarios 复杂室内环境下无线传播特性研究

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583424

Leire Azpilicueta Fernandez de las Heras

引用次数: 4

Optimising QoS of VoIP over wireless LANs via synchronized time 通过同步时间优化无线局域网上VoIP的QoS

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583421

Padraig O. Flaithearta, H. Melvin, M. Schukat

引用次数: 8

On the design of robust and adaptive IEEE 802.11 multicast services for video transmissions 面向视频传输的IEEE 802.11鲁棒自适应组播服务设计

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583508

M. A. Santos, Jose Miguel Villalón Millán, L. Orozco-Barbosa, L. Janowski

{"title":"On the design of robust and adaptive IEEE 802.11 multicast services for video transmissions","authors":"M. A. Santos, Jose Miguel Villalón Millán, L. Orozco-Barbosa, L. Janowski","doi":"10.1109/WoWMoM.2013.6583508","DOIUrl":"https://doi.org/10.1109/WoWMoM.2013.6583508","url":null,"abstract":"Video communications require the use of networks capable of optimally allocating resources and adapting dynamically themselves to the changing operating conditions. When a video stream has to be delivered to various receivers, the appropriate service to accomplish the delivery process is the multicast communication service. In the particular case of the widely used IEEE 802.11 Wireless LANs (WLANs), the multicast service is simply specified as an unreliable broadcasting service, i.e., it does not include any error recovery mechanism. The absence of feedback from the receivers does not only prevent the sender from taking proper action to recover the corrupted packets, but it also makes unfeasible the implementation of a channel rate adaptation mechanism as the one used by the IEEE 802.11 unicast service. The absence of such mechanism may render the multicast service useless if the channel conditions are so that it makes unreliable the delivery process of the multicast traffic. Even though the IEEE has been working on an amendment to the standard specifying the operation of various error recovery mechanisms for the multicast service, these services have not been designed to support any rate adaptation mechanism. In this paper, we present a novel auto rate selection multicast mechanism, whose design is based on the collision prevention to increase the reliability. We have developed QoS and QoE evaluations via simulation, demonstrating that our proposal outperforms the video quality perceived by the end-user.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123286939","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: 5

A Cluster-Aware Soft Frequency Reuse scheme for inter-cell interference mitigation in LTE based femtocell networks 基于LTE的飞蜂窝网络小区间干扰抑制的集群感知软频率复用方案

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583436

Kuheli Louha, Hailong Li, D. Agrawal

{"title":"A Cluster-Aware Soft Frequency Reuse scheme for inter-cell interference mitigation in LTE based femtocell networks","authors":"Kuheli Louha, Hailong Li, D. Agrawal","doi":"10.1109/WoWMoM.2013.6583436","DOIUrl":"https://doi.org/10.1109/WoWMoM.2013.6583436","url":null,"abstract":"Due to the requirement for extensive coverage, Long Term Evolution (LTE) has developed small cellular base stations called femtocells that can dramatically improve voice and data coverage for the indoor subscribers. However, limited spectrum availability in the cellular networks causes severe interference issues in the neighboring femtocell users transmitting in the same radio band. In densely deployed environments, interference problems in co-channel femtocell networks causes significant degradation in performance. In this paper, we propose a Cluster-Aware Soft Frequency Reuse (CASFR) scheme, that assigns distinct set of Physical Resource Blocks (PRB)s to each interfering femtocells. The scheme first uses periodic messages from the femto-user (FUE) to identify the interfering femtocells. It then divides each femtocell area into cell-center and cell-edge. Finally, it uses the CASFR algorithm to assign un-interfering sets of PRBs to the cell-center and cell-edge users of all the interfering femtocells. We also proposed a PRB Swapping and Exchange (PSE) algorithm for the uplink to further reduce any interference that may remain after performing CASFR. The simulation results show 14% decrease in the Inter Cell Interference (ICI) levels in the femto users, thereby increasing their average throughput by 25%.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"33 7-8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131753180","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: 15

Spatial correlation model for heterogeneous cameras in wireless multimedia sensor networks 无线多媒体传感器网络中异构摄像机的空间相关模型

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583412

M. Mowafi, F. Awad, Walid A. Y. Aljoby

{"title":"Spatial correlation model for heterogeneous cameras in wireless multimedia sensor networks","authors":"M. Mowafi, F. Awad, Walid A. Y. Aljoby","doi":"10.1109/WoWMoM.2013.6583412","DOIUrl":"https://doi.org/10.1109/WoWMoM.2013.6583412","url":null,"abstract":"Collaborative in-network processing has shown to efficiently reduce the per-node processing and transmission requirements in wireless multimedia sensor networks. When the camera nodes are randomly distributed in an area of interest, it is very likely that their fields of view would overlap causing the corresponding visual information to be highly correlated. In applied wireless multimedia sensor networks, heterogeneous camera nodes with different sensing radii and angles of view are usually deployed, which has shown to enhance the overall network performance and lifetime. This paper introduces a new correlation model to exploit the correlation characteristics among heterogeneous camera nodes for wireless multimedia sensor networks. The proposed model, of which a closed-form analytical correlation function was derived, takes into consideration different sensing parameters of the camera nodes; such as the sensing radii and the angles of view. The simulation results demonstrated that the proposed model outperforms the state-of-the-art in terms of the accuracy of estimating the correlation characteristics, the information gain, and the distortion ratio.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"33 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120922153","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: 2

Personalised 3D navigation and understanding of Geo-referenced Scenes 个性化的3D导航和地理参考场景的理解

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583497

N. Doulamis, Christos Yiakoumettis, G. Miaoulis

引用次数: 5

A comparative simulation of opportunistic routing protocols using realistic mobility data obtained from mass events 机会路由协议的比较模拟，使用从大规模事件中获得的真实移动数据

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583438

Arno Barzan, B. Bonné, P. Quax, W. Lamotte, Mathias Versichele, N. Weghe

{"title":"A comparative simulation of opportunistic routing protocols using realistic mobility data obtained from mass events","authors":"Arno Barzan, B. Bonné, P. Quax, W. Lamotte, Mathias Versichele, N. Weghe","doi":"10.1109/WoWMoM.2013.6583438","DOIUrl":"https://doi.org/10.1109/WoWMoM.2013.6583438","url":null,"abstract":"Large crowds at music festivals or other mass events create challenging environments for traditional infrastructure based wireless networks. Mobile devices carried by the attendees produce large amounts of network traffic that can result in network outage or serious delays. Opportunistic networks may offer solutions to enable communication between attendees and/or organizers through direct communication between devices, without requiring a fixed infrastructure. In previous work, researchers have developed numerous opportunistic routing protocols designed to enable communication in such ad hoc networks. In this paper, several of these protocols are evaluated for the specific use case of a music festival by running simulations that make use of realistic mobility data collected during an international music festival. This analysis allows for identification of candidate routing protocols that exhibit properties that make them suitable for the envisaged scenario. The goal is to narrow down the set of candidate protocols and to eventually fine tune them to optimize their working. Based on the simulations, we propose two candidate routing protocols that are most suited for use at mass events.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131039347","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: 5

Performance evaluation of the IEEE 802.11aa multicast mechanisms for video streaming 视频流IEEE 802.11aa组播机制的性能评估

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WoWMoM.2013.6583394

A. D. Oliva, P. Serrano, P. Salvador, A. Banchs

引用次数: 27

Autonomic cognitive-based data dissemination in Opportunistic Networks 机会主义网络中基于自主认知的数据传播

2013 IEEE 14th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM) Pub Date : 2013-06-04 DOI: 10.1109/WOWMOM.2013.6583379

L. Valerio, M. Conti, E. Pagani, A. Passarella

{"title":"Autonomic cognitive-based data dissemination in Opportunistic Networks","authors":"L. Valerio, M. Conti, E. Pagani, A. Passarella","doi":"10.1109/WOWMOM.2013.6583379","DOIUrl":"https://doi.org/10.1109/WOWMOM.2013.6583379","url":null,"abstract":"Opportunistic Networks (OppNets) offer a very volatile and dynamic networking environment. Several applications proposed for OppNets - such as social networking, emergency management, pervasive and urban sensing - involve the problem of sharing content amongst interested users. Despite the fact that nodes have limited resources, existing solutions for content sharing require that the nodes maintain and exchange large amount of status information, but this limits the system scalability. In order to cope with this problem, in this paper we present and evaluate a solution based on cognitive heuristics. Cognitive heuristics are functional models of the mental processes, studied in the cognitive psychology field. They describe the behavior of the brain when decisions have to be taken quickly, in spite of incomplete information. In our solution, nodes maintain an aggregated information built up from observations of the encountered nodes. The aggregate status and a probabilistic decision process is the basis on which nodes apply cognitive heuristics to decide how to disseminate content items upon meeting with each other. These two features allow the proposed solution to drastically limit the state kept by each node, and to dynamically adapt to both the dynamics of item diffusion and the dynamically changing node interests. The performance of our solution is evaluated through simulation and compared with other solutions in the literature.","PeriodicalId":158378,"journal":{"name":"2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133579030","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: 11