2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)最新文献

Efficient spectrum allocation algorithm for Cognitive Radio Networks in a shadow fading environment 阴影衰落环境下认知无线网络的高效频谱分配算法

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934901

A. Sabbah, M. Ibnkahla

引用次数: 8

What happens with a proportional fair cellular scheduling when D2D communications underlay a cellular network? 当D2D通信基于蜂窝网络时，比例公平蜂窝调度会发生什么?

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934896

Rodrigo L. Batista, Carlos F. M. Silva, J. M. B. D. Silva, T. Maciel, F. Cavalcanti

{"title":"What happens with a proportional fair cellular scheduling when D2D communications underlay a cellular network?","authors":"Rodrigo L. Batista, Carlos F. M. Silva, J. M. B. D. Silva, T. Maciel, F. Cavalcanti","doi":"10.1109/WCNCW.2014.6934896","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934896","url":null,"abstract":"Device-to-Device (D2D) communications are seen as promising technology for future wireless systems. However, while underlying cellular networks they can negatively affect the performance of cellular communications when intra-cell spectrum sharing is enabled. The impact of D2D communications is not only seen on the cellular throughput, but also on the decision-making of the cellular scheduling policy. In this paper, we provide an impact assessment of D2D communications on the performance of Proportional Fair (PF) scheduling for a Long Term Evolution (LTE) multi-cell scenario through system-level simulations. Results show that due to excessive interference generated by D2D communications and depending on the accuracy of the link quality measure used to estimate the instantaneous data rate, a PF cellular scheduling policy may get stuck in an infinite loop and continuously selects the same User Equipments (UEs), which reduces the cellular throughput, or even approaches the performance of a Maximum Rate (MR)-based policy, thus affecting service coverage and fairness.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124087203","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: 13

Active antenna systems for centralized self-optimization of capacity in LTE-A 用于集中自优化LTE-A容量的有源天线系统

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934880

Yasir Khan, B. Sayraç, É. Moulines

{"title":"Active antenna systems for centralized self-optimization of capacity in LTE-A","authors":"Yasir Khan, B. Sayraç, É. Moulines","doi":"10.1109/WCNCW.2014.6934880","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934880","url":null,"abstract":"Network Quality-of-Service (QoS) improvements in terms of capacity can be brought about by optimizing antenna tilts. Active Antenna Systems (AAS) are gaining wide interest recently for their agile ability to electronically adjust the beam in the optimum direction based on operators' QoS interests. In our previous work, we had proposed a novel technique for centralized self-optimization using an iterative modeling and optimization framework called as “surrogate-based optimization”. This framework involves: 1-the use of a stochastic model which can be used “as a surrogate” (i.e. to replace) the functional relationships between the network parameters and Key Performance Indicators (KPI), and 2-a subsequent use of a pattern search algorithm as an optimization process, in an iterative manner. In this work, we propose to use the surrogate-based framework for optimization of antenna tilts in Long Term Evolution Advanced (LTE-A) networks and compare optimization results of several capacity based objectives. Results using a flow level network simulator reveals the need to jointly optimize multi-capacity-objectives in a centralized manner apart from demonstrating the superiority of the iterative self-optimization methodology in terms of fast convergence, adaptivity and flexibility.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122140823","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: 4

Uplink and downlink resource allocation in D2D-enabled heterogeneous networks 支持d2d的异构网络上下行资源分配

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934866

F. Malandrino, C. Casetti, C. Chiasserini, Zana Limani

引用次数: 11

TVWS indoor measurements for HetNets 为HetNets进行的TVWS室内测量

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934864

Adrian Kliks, P. Kryszkiewicz, A. Umbert, J. Pérez-Romero, F. Casadevall

引用次数: 15

Seamless mobile data offloading in Heterogeneous Wireless Networks based on IEEE 802.21 and user experience 基于IEEE 802.21和用户体验的异构无线网络无缝移动数据卸载

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934882

F. A. Tuzunkan, V. C. Gungor, E. Zeydan, Ömer Ileri, S. Ergüt

{"title":"Seamless mobile data offloading in Heterogeneous Wireless Networks based on IEEE 802.21 and user experience","authors":"F. A. Tuzunkan, V. C. Gungor, E. Zeydan, Ömer Ileri, S. Ergüt","doi":"10.1109/WCNCW.2014.6934882","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934882","url":null,"abstract":"The increase on smartphone usage has brought the burden of data traffic with it. Operators are looking for cost-effective solutions to overcome the problem of 3G infrastructure for high contention traffic scenarios. Several schemes were offered to save the moment, and they brought some extra costs including deploying femtocell or WiMax, LTE, LTE-Advanced systems along with their expensive equipment. On the other hand, operators are expanding their networks with 802.11 technologies such that they can exploit the free-band communication. Meaning the data traffic can handover between WLAN and UMTS interchangeably. By using NS-2 simulator, we implemented IEEE 802.21 WG's Media Independent Handover (MIH) module by combining with Channel Quality Indicator (CQI) values collected from user equipment (UE) and observed a recovered throughput for both medium. We found that there is a tradeoff among energy efficiency, delay tolerance and cost. Furthermore, in this study, we integrated a Quality of Experience (QoE) metric during real-time handover decision process so that with this type of collaborative solution, an operator will be unique in terms of user happiness and heterogeneous network management.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348343","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: 4

Energy saving schemes for self-backhauled Small Cells in LTE-Advanced networks LTE-Advanced网络中自回程小蜂窝的节能方案

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934855

D. Sabella, M. Caretti, R. Fantini

{"title":"Energy saving schemes for self-backhauled Small Cells in LTE-Advanced networks","authors":"D. Sabella, M. Caretti, R. Fantini","doi":"10.1109/WCNCW.2014.6934855","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934855","url":null,"abstract":"In the present study self-backhauled small cells for LTE-Advanced (a particular kind of small cells with wireless backhauling) are analyzed from the energy efficiency point of view. We perform an assessment of system performances with respect to traditional homogeneous LTE-Advanced networks, not only in terms of capacity and energy consumption, but also showing the potential impacts on the Quality of Service (QoS) of the system. In particular the self-backhauled small cell architecture considered in this paper is based on the type I relay architecture specified in Release 10 of 3GPP. Moreover, a scheduling framework based on MBSFN subframe switching is described and proposed as potential enabler for further energy efficiency enhancements. In addition, a possible Centralized RAN (C-RAN) implementation is described, consisting in a partially centralized algorithm and the application of this mechanism in a centralized processing unit instructing local scheduling entities implemented in the protocol stack of Small Cells. The presence of these schedulers in conjunction with on-board sleep-modes can be a promising tool for maximizing energy efficiency benefits in conditions of low traffic load. System level simulation results showed that these Small Cells in urban and suburban environments can satisfy the need of increasing traffic demand by providing an higher energy efficiency without compromising the QoS and the system capacity.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134294168","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

SON Coordination for parameter conflict resolution: A reinforcement learning framework 参数冲突解决的SON协调:一个强化学习框架

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934885

Ovidiu Iacoboaiea, B. Sayraç, S. B. Jemaa, P. Bianchi

{"title":"SON Coordination for parameter conflict resolution: A reinforcement learning framework","authors":"Ovidiu Iacoboaiea, B. Sayraç, S. B. Jemaa, P. Bianchi","doi":"10.1109/WCNCW.2014.6934885","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934885","url":null,"abstract":"Self Organizing Network (SON) functions are meant to automate the network tuning, providing responses to the network state evolution. An instance of a SON function can run on one cell (distributed architecture) or can be built to govern a cluster of cells (centralized/hybrid architecture). From the operator point of view, SON functions are seen as black boxes. Several independent instances of one or multiple SON functions running in parallel are likely to generate conflicts and unstable network behavior. At a higher level, the SON-COordinator (SONCO) seeks to solve these conflicts. This paper addresses the design of a SONCO. We focus on coordinating two distributed SON functions: Mobility Load Balancing (MLB) and Mobility Robustness Optimization (MRO). Thus on each cell we will have an MLB and an MRO instance. The MLB instances will tune the Cell Individual Offset (CIO) parameter and the MRO instances will tune the HandOver (HO) Hysteresis parameter together with the CIO parameter. The task of the SONCO is to solve the conflicts that will appear on the CIO parameter. We propose a Reinforcement Learning (RL) framework as it offers the possibility to improve the decisions based on past experiences. We outline the tradeoff between configurations through numeric results.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122751291","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: 21

Energy-latency trade-off for multiuser wireless computation offloading 多用户无线计算卸载的能量延迟权衡

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934856

O. Muñoz, A. Pascual-Iserte, J. Vidal, Marc Molina

引用次数: 33

Fairness evaluation of scheduling algorithms for dense M2M implementations 密集M2M调度算法的公平性评估

2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934874

S. Mahmud, F. Khan, Muhammad Ali, G. M. Khan, F. Z. Yousaf

引用次数: 11