2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)最新文献_第3页

Distributed online submodular maximization in resource-constrained networks 资源约束网络中的分布式在线子模块最大化

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850325

Andrew Clark, Basel Alomair, L. Bushnell, R. Poovendran

{"title":"Distributed online submodular maximization in resource-constrained networks","authors":"Andrew Clark, Basel Alomair, L. Bushnell, R. Poovendran","doi":"10.1109/WIOPT.2014.6850325","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850325","url":null,"abstract":"Maximization of submodular set functions arises in wireless applications such as scheduling, caching, and leader selection. For a centralized entity with oracle access to the submodular function, submodular maximization can be approximated up to a constant factor using polynomial-time algorithms; such an entity, however, may be unavailable in decentralized wireless networks. In this paper, we consider maximization of a time-varying submodular function by distributed, resource-constrained nodes. We present algorithms for unconstrained distributed submodular maximization, as well as monotone submodular maximization subject to cardinality constraints. For the unconstrained submodular maximization problem, our algorithm achieves an expected optimality gap of 1/3. For cardinality-constrained submodular maximization, our algorithm achieves an expected optimality gap of 1/2, while reducing the storage and communication overhead, as well as the computation requirements of the nodes, compared to existing techniques. We evaluate our approach through an experimental study using sensor scheduling data, and find that our approach is within ten percent of the best achievable utility in the unconstrained case and within five percent in the constrained case.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127038727","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

Cache-aware user association in backhaul-constrained small cell networks 回程约束小蜂窝网络中缓存感知的用户关联

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850276

Francesco Pantisano, M. Bennis, W. Saad, M. Debbah

{"title":"Cache-aware user association in backhaul-constrained small cell networks","authors":"Francesco Pantisano, M. Bennis, W. Saad, M. Debbah","doi":"10.1109/WIOPT.2014.6850276","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850276","url":null,"abstract":"Anticipating multimedia file requests via caching at the small cell base stations (SBSs) of a cellular network has emerged as a promising technique for optimizing the quality of service (QoS) of wireless user equipments (UEs). However, developing efficient caching strategies must properly account for specific small cell constraints, such as backhaul congestion and limited storage capacity. In this paper, we address the problem of devising a user-cell association, in which the SBSs exploit caching capabilities to overcome the backhaul capacity limitations and enhance the users' QoS. In the proposed approach, the SBSs individually decide on which UEs to service based on both content availability and on the data rates they can deliver, given the interference and backhaul capacity limitations. We formulate the problem as a one-to-many matching game between SBSs and UEs. To solve this game, we propose a distributed algorithm, based on the deferred acceptance scheme, that enables the players (i.e., UEs and SBSs) to self-organize into a stable matching, in a reasonable number of algorithm iterations. Simulation results show that the proposed cell association scheme yields significant gains, reaching up to 21% improvement compared to a traditional cell association techniques with no caching considerations.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125444865","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: 83

SSIM-based video admission control and resource allocation algorithms 基于sim卡的视频准入控制和资源分配算法

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850361

M. Zanforlin, D. Munaretto, A. Zanella, M. Zorzi

{"title":"SSIM-based video admission control and resource allocation algorithms","authors":"M. Zanforlin, D. Munaretto, A. Zanella, M. Zorzi","doi":"10.1109/WIOPT.2014.6850361","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850361","url":null,"abstract":"The exponential growth of video traffic in mobile networks calls for the deployment of advanced video admission control (VAC) and resource management (RM) techniques in order to provide the best quality of experience (QoE) to the end user according to the available network resources. The degradation of the QoE perceived by the user when reducing the source rate of a video typically depends on the content of the video itself. In this paper, we analyzed the QoE of a group of test video sequences encoded with H.264 advanced video codec at different rates, i.e., quality levels. The QoE is objectively expressed in terms of the average structural similarity (SSIM) index. Based on empirical results, we propose a 4-degree polynomial approximation of the SSIM as a function of the coded video rate. We hence propose to tag each video with these polynomial coefficients that provide a compact description of its specific SSIM behavior, and to use this information in VAC and RM algorithms to optimally manage a shared transmission medium. As a proof of concept, we report selected simulation results that compare QoE-aware and QoE-agnostic algorithms in a scenario with a single link shared by multiple concurrent video flows.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116079849","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: 28

Many-to-many matching games for proactive social-caching in wireless small cell networks 无线小型蜂窝网络中主动社交缓存的多对多匹配游戏

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850348

Kenza Hamidouche, W. Saad, M. Debbah

引用次数: 120

Impact of channel state information on energy efficient transmission in interference channels 信道状态信息对干扰信道节能传输的影响

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850335

G. Nguyen, S. Kompella, C. Kam, J. Wieselthier, A. Ephremides

引用次数: 0

Resource allocation and sharing in cooperative networks 合作网络中的资源配置与共享

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850296

F. Baccar, I. Kammoun, A. Cipriano

引用次数: 0

Reduced-dimension power allocation over clustered channels in cognitive radios system under co-channel interference 同信道干扰下认知无线电系统聚类信道的降维功率分配

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.7130897

Mahdi Ben Ghorbel, M. Guenach, Mohamed-Slim Alouini

{"title":"Reduced-dimension power allocation over clustered channels in cognitive radios system under co-channel interference","authors":"Mahdi Ben Ghorbel, M. Guenach, Mohamed-Slim Alouini","doi":"10.1109/WIOPT.2014.7130897","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.7130897","url":null,"abstract":"The objective of this paper is to propose a reduceddimension resource allocation scheme in the context of cognitive radio system in presence of co-channel interference between users. We assume a multicarrier transmission for both the primary and secondary systems. Instead of optimizing the powers over all sub-carriers, the sub-carriers are grouped into clusters of sub-carriers, where the power of each sub-carrier is directly related to the power of the correspondent cluster. The power optimization is done only over the set of clusters instead of all sub-carriers which can significantly reduce the complexity of the resource allocation problem. The performance loss of the reduced dimension solution with respect to the optimal solution, where the optimization is carried over all active sub-carriers, allows trading-off complexity versus performance. Numerical evaluation indeed revealed that a limited performance loss occurs by optimizing over a reduced set of clusters instead of the full optimization in the context of cognitive radio systems.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132104316","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

Power control policies for a wireless link with energy harvesting transmitter and receiver 具有能量收集发射机和接收机的无线链路的功率控制策略

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850333

Tingjun Chen, Sheng Zhou, Wei Chen, Z. Niu

引用次数: 4

Resource optimization over DVB-RCS satellite links through the use of SPDY 通过使用SPDY实现DVB-RCS卫星链路上的资源优化

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850280

A. Salam, M. Luglio, C. Roseti, F. Zampognaro

{"title":"Resource optimization over DVB-RCS satellite links through the use of SPDY","authors":"A. Salam, M. Luglio, C. Roseti, F. Zampognaro","doi":"10.1109/WIOPT.2014.6850280","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850280","url":null,"abstract":"SPDY is a recent Web technology aimed to improve webpages load time and resource utilization, through the implementation of: multiplexing and prioritization of webpage objects, header compression, resource pushing and encryption. Most of these techniques are already implemented in Performance Enhancing Proxies (PEPs), which are adopted in geostationary satellite systems to optimize TCP-based application performance. Thus, SPDY is expected to provide benefits for satellite communications resource management. This paper provides a careful assessment of SPDY performance over satellite links, compliant to DVB-RCS standard, with return link resources assigned on demand through a Demand Assignment Multiple Access (DAMA) method. Such a reference scenario constitutes a challenging communication environment due to both the limited return link bandwidth and the relatively high latency. Performance evaluation has been carried out through a satellite network emulator, which reproduces physical layer satellite impairments, while running real implementations of both TCP/IP stack and SPDY.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133029753","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 censoring-enabled systems for sequential detection in large wireless sensor networks 大型无线传感器网络中用于顺序检测的审查系统的性能评估

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850284

Mohammed Karmoose, Karim G. Seddik, Ahmed Sultan

引用次数: 1