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2014 IEEE Globecom Workshops (GC Wkshps)最新文献

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Introducing quick sleeping using the broadcast channel for 3GPP LTE MTC 介绍了3GPP LTE MTC使用广播信道的快速睡眠
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063499
Naveen Mysore Balasubramanya, L. Lampe, Gustav Vos, Steve Bennett
The world is advancing towards Internet of Things (IoT) where various types of devices communicate and share data with each other. The communication between the devices are enabled and controlled through Machine Type Communications (MTC). MTC has a wide range of applications and forms an integral part of IoT. The 3rd Generation Partnership Project (3GPP) standardization body has recognized the potential for MTC and is currently working on standardizing the specifications and deployment of MTC services as part of Long Term Evolution (LTE) networks. The system requirements of these MTC devices are different from the regular devices using the LTE network. Many MTC devices are expected to be low cost, low data rate and delay tolerant. One of the challenges in MTC using 3GPP LTE is to reduce the power consumption of the User Equipment (UE) in order to prolong their battery life. The power consumption of a UE is directly proportional to its processing time. In this paper, we introduce quick sleeping to the current 3GPP LTE MTC framework. First, we compare the quick sleeping mechanism with the present Discontinuous Reception (DRX) mechanism for sleeping in LTE and show that there can be significant savings in the UE processing time if quick sleeping is adopted. Then we present different methods to incorporate quick sleeping into the Physical Broadcast Channel (PBCH) with minimal changes to the current LTE standard. The impact of these quick sleeping solutions on PBCH Block Error Rate (BLER) performance is also discussed.
世界正在向各种设备相互通信和共享数据的物联网(IoT)发展。设备之间的通信通过MTC (Machine Type Communications)实现和控制。MTC具有广泛的应用范围,是物联网的重要组成部分。第三代合作伙伴计划(3GPP)标准化机构已经认识到MTC的潜力,目前正致力于将MTC服务的规范和部署标准化,并将其作为长期演进(LTE)网络的一部分。这些MTC设备的系统要求与使用LTE网络的常规设备有所不同。许多MTC设备被期望具有低成本、低数据速率和延迟容忍度。使用3GPP LTE的MTC面临的挑战之一是降低用户设备(UE)的功耗,以延长其电池寿命。终端的功耗与处理时间成正比。本文将快速睡眠引入到现有的3GPP LTE MTC框架中。首先,我们将快速睡眠机制与目前LTE中的不连续接收(DRX)睡眠机制进行了比较,并表明如果采用快速睡眠机制,可以显著节省UE处理时间。然后,我们提出了不同的方法来将快速睡眠纳入物理广播信道(PBCH),而对当前LTE标准的变化最小。讨论了这些快速休眠方案对PBCH块错误率(BLER)性能的影响。
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引用次数: 6
Cell division, migration and death for energy efficient 5G ultra-small cell networks 高效节能5G超小型蜂窝网络的细胞分裂、迁移和死亡
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063554
Zhehan Li, D. Grace, P. Mitchell
In this paper, a novel topology management scheme is proposed for 5G Small Cell Networks (SCNs). The scheme is based on cell division, migration and death dedicated to exploiting the sleep mode of base stations to reduce the number of active base stations in a SCN for energy saving. Direction Of Arrival is used in a distributed way to adapt networks to the dynamic traffic conditions. Simulation results show that the proposed scheme saves 39% power at low traffic loads compared with no topology management. With the scheme, SCNs can react to various traffic loads and consequently can sustain at least 1.2 Gbps/km2/MHz traffic with low blocking probability. The proposed scheme is compared to an existing topology management scheme and demonstrated to attain similar performance while reducing information exchange overhead. The alternative configurations of the scheme are investigated and analyzed.
本文提出了一种新的5G小蜂窝网络(SCNs)拓扑管理方案。该方案基于细胞分裂、迁移和死亡,致力于利用基站的休眠模式来减少一个SCN中活动基站的数量,从而达到节能的目的。到达方向以分布式的方式使用,使网络适应动态交通条件。仿真结果表明,与不进行拓扑管理相比,该方案在低流量负载下可节省39%的功耗。利用该方案,scn可以对各种流量负载做出反应,因此可以以低阻塞概率维持至少1.2 Gbps/km2/MHz的流量。将所提出的方案与现有的拓扑管理方案进行了比较,并证明在减少信息交换开销的同时获得了相似的性能。对该方案的备选配置进行了研究和分析。
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引用次数: 4
Optimal area power efficiency in cellular networks 蜂窝网络的最优区域功率效率
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063589
Bhanukiran Perabathini, M. Kountouris, M. Debbah, A. Conte
In this paper, we study the problem of minimizing the area power consumption in wireless cellular networks. We focus on the downlink of a single-tier network, in which the locations of base stations (BSs) are distributed according to a homogeneous Poisson point process (PPP). Assuming that a mobile user is connected to its strongest candidate BS, we derive bounds on the optimal transmit power in order to guarantee a certain minimum coverage and data rate. Under the same quality of service constraints, we find the optimal network density that minimizes the area power density. Our results show that the existence of an optimal BS density for minimizing the power consumption depends on the value of the pathloss exponent.
本文主要研究无线蜂窝网络中区域功耗最小的问题。我们关注的是单层网络的下行链路,其中基站(BSs)的位置根据均匀泊松点过程(PPP)分布。假设移动用户连接到其最强候选基站,我们推导了最优发射功率的界限,以保证一定的最小覆盖和数据速率。在相同的服务质量约束下,求出使区域功率密度最小的最优网络密度。我们的结果表明,最小化功耗的最优BS密度的存在取决于路径损耗指数的值。
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引用次数: 7
On the energy efficiency of coherent communication in multipath fading channels 多径衰落信道中相干通信的能量效率研究
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063578
Dinuka Kudavithana, Q. Chaudhari, B. Krongold, J. Evans
Conventional research on energy-efficient wireless systems tends to focus on saving transmit energy. However, as the evolution of wireless systems moves towards shorter distance transmission and smaller cell sizes, the computational energy in wireless hardware becomes significant alongside transmit radio energy. In this paper, we develop energy models for a point-to-point wireless transmission that consider practical aspects such as multipath fading, error-control coding and receiver synchronization. The total energy consumption of the wireless system is modeled as a function of modulation scheme, data rate, signal bandwidth, code rate, received signal-to-noise ratio (SNR) and channel parameters. We choose a multipath Rayleigh-fading channel model and Reed-Solomon coding scheme for the numerical analyses. Simulation results show that there exists an optimal parameter configuration that gives the minimum energy consumption for given data and bit-error rates. At short transmission distances, computational energy dominates and higher-order modulation schemes with low bandwidth allocation are shown to be more energy efficient.
传统的节能无线系统研究往往侧重于节省传输能量。然而,随着无线系统向更短距离传输和更小单元尺寸的方向发展,无线硬件中的计算能量与发射无线电能量一起变得非常重要。在本文中,我们建立了点对点无线传输的能量模型,该模型考虑了多径衰落、错误控制编码和接收器同步等实际问题。将无线系统的总能耗建模为调制方案、数据速率、信号带宽、码率、接收信噪比(SNR)和信道参数的函数。我们选择了多径瑞利衰落信道模型和Reed-Solomon编码方案进行数值分析。仿真结果表明,在给定的数据和误码率下,存在一种能使能耗最小的最优参数配置。在短传输距离下,计算能量占主导地位,低带宽分配的高阶调制方案更节能。
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引用次数: 0
Securing offloading process within small cell cloud-based mobile networks 在基于云计算的小型移动网络中确保卸载过程的安全
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063378
M. Rohlik, T. Vanek
Small cells endowed with specific cloud capabilities provide a new and promising approach to offer attractive services, such as cloud services which are still being exploited for offloading computation from a mobile device or for data storing purposes. Within our research, we focus on a typical application of multiple cloud enabled small cells located within a local area network, typically in company premises. The user offloading request is processed by small cells according to their current availability of resources. However, the user equipment does not need to be directly associated with it. Therefore, the transmitted data need to be secured by a different mechanism that ensures end-to-end security and identity of each communicating party in order to prevent various attacks. For that purpose, we propose a hierarchical structure of certificate authorities which is an asymmetric cryptographic scheme based on modified X.509 digital certificates. Beside the previously stated issues, the proposed scheme also decreases computing time needed for certificate validation as well as validation delay introduced by the online certificate status protocol and limits the necessity of communication with the main certificate authority.
具有特定云功能的小单元提供了一种新的、有前途的方法来提供有吸引力的服务,例如云服务,它仍然被用于从移动设备卸载计算或用于数据存储目的。在我们的研究中,我们专注于位于局域网内的多个启用云的小型蜂窝的典型应用,通常在公司内部。用户卸载请求由小单元根据它们当前的资源可用性来处理。但是,用户设备不需要与之直接关联。因此,需要采用不同的机制来保护传输的数据,保证端到端的安全性和通信各方的身份,以防止各种攻击。为此,我们提出了一种证书颁发机构的分层结构,这是一种基于修改的X.509数字证书的非对称加密方案。除了上述问题外,该方案还减少了证书验证所需的计算时间以及在线证书状态协议引入的验证延迟,并限制了与主证书颁发机构通信的必要性。
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引用次数: 0
SDN-based autonomic CCN traffic management 基于sdn的自主CCN流量管理
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063428
Qi Sun, Wendong Wang, Yannan Hu, Xirong Que, Xiangyang Gong
Content-Centric Networking (CCN) is a novel architecture that has been proposed as a solution for dealing with various problems obsessing the Internet, such as the excessive bandwidth costs that result from peer-to-peer (P2P) traffic and content delivery networks (CDN). CCN names packets rather than end-hosts, and most of CCN's characteristics are the consequences of this fact. However, the current design of CCN has some limitations in traffic control, especially in flow fairness and node-to-node collaboration. To solve this problem, we propose an SDN-based autonomie system as the control plane to supplement CCN traffic management. Correspondingly, in the data plane, we utilize a multiprotocol switch to support CCN protocol, flow-aware content delivery and traffic control. We also discuss the implementation and extension issues, and finally, we demonstrate our hybrid scheme to perform centralized and intelligent traffic management, which provides higher awareness, fairness, and low congestion.
内容中心网络(content - centric Networking, CCN)是一种新颖的体系结构,被提出用来解决困扰互联网的各种问题,例如点对点(P2P)流量和内容分发网络(content delivery network, CDN)带来的过多带宽成本。CCN命名包而不是终端主机,大多数CCN的特征都是这一事实的结果。然而,目前的CCN设计在流量控制方面存在一定的局限性,特别是在流量公平性和节点间协作方面。为了解决这个问题,我们提出了一个基于sdn的自治系统作为控制平面来补充CCN流量管理。相应地,在数据平面,我们利用多协议交换机来支持CCN协议、流感知内容交付和流量控制。本文还讨论了实现和扩展问题,最后给出了我们的混合方案来实现集中式和智能化的交通管理,该方案提供了更高的感知性、公平性和低拥塞性。
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引用次数: 11
Codebook based beamforming and multiuser scheduling scheme for mmWave outdoor cellular systems in the 28, 38 and 60GHz bands 基于码本的28,38和60GHz频段毫米波室外蜂窝系统波束形成和多用户调度方案
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063461
Djamal E. Berraki, S. Armour, A. Nix
In this paper a 3D ray tracing tool is developed for mmWave outdoor environments. Coverage analysis and system performance is performed for a small cell system at 60GHz. Peak throughputs beyond 3Gbps and cell edge throughputs in excess of 500Mbps are demonstrated at 98% of the mobile test locations. Analogue codebook based beamforming is applied. The analysis of the statistical angular spread at the mobiles is shown to be clustered; leading to many users selecting the similar analogue beamforming code which results is high levels of co-channel interference. It is often assumed that the use of analogue beamforming implies a single beam pattern pointing in a specific direction to support a single user. In this case users that cannot be spatially separated must be scheduled in different time slots. However, due to the clustered aspect of the users' angle spreads, those with the same beam code can still be scheduled in the same time slot using different frequency channels via a single RF chain. The paper analyses a scheduling scheme based on this concept. The same scheduling scheme is applied to systems operating at 28, 38 and 60GHz where different numbers of frequency channels are available. Different user densities and street scenarios are studied. The 60GHz scheme make use of 4 frequency channels and is shown to double the system throughput compared to operation at 28GHz band using a single frequency channel. Finally, the optimal number of RF chains required at the base station is analysed. This is shown to be a critical design issue for mmWave cellular systems.
本文开发了一种适用于毫米波室外环境的三维光线跟踪工具。对60GHz的小型小区系统进行了覆盖分析和系统性能分析。98%的移动测试地点显示峰值吞吐量超过3Gbps,蜂窝边缘吞吐量超过500Mbps。采用了基于模拟码本的波束形成。在移动点处的统计角扩展分析显示为聚类;导致许多用户选择相似的模拟波束形成码,结果是高水平的同信道干扰。通常假设使用模拟波束形成意味着指向特定方向的单一波束模式以支持单个用户。在这种情况下,不能在空间上分离的用户必须被安排在不同的时间段。然而,由于用户角度扩展的聚类性,具有相同波束码的用户仍然可以通过单个射频链使用不同的频率信道被安排在相同的时隙中。本文在此基础上分析了一种调度方案。同样的调度方案适用于运行在28ghz、38ghz和60GHz的系统,其中可用的频率通道数量不同。研究了不同的用户密度和街道场景。60GHz方案使用4个频率通道,与使用单一频率通道的28GHz频段相比,显示出双倍的系统吞吐量。最后,分析了基站所需的最佳射频链数。这被证明是毫米波蜂窝系统的一个关键设计问题。
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引用次数: 13
A SDN-based network virtualization architecture with autonomie management 基于sdn的网络虚拟化架构,具有自治管理功能
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063427
Qinglei Qi, Wendong Wang, Xiangyang Gong, Xirong Que
The ossified architecture and widespread application of the internet have restricted its development For overcoming the existing obstacles of network innovation and management, network virtualization and autonomic management have been proposed. However, these two attractive technologies are subjected to the headaches of updating various devices. Software-Defined Networking (SDN) separates the control plane from the data plane. Therefore, some network control and management functions could be implemented through softwares. This provides a chance for the network virtualization and autonomic management In this paper, a SDN-based network Virtualization architecture with Autonomic management (SDNVA) is proposed. The SDNVA architecture enables heterogeneous virtual networks to coexist on the same physical network, and supports hierarchical autonomic management. Moreover, we evaluate SDNVA on our testbed and find that the SDNVA architecture can perceive topology changes and isolate multiple virtual networks.
互联网僵化的架构和广泛的应用限制了其发展,为了克服现有的网络创新和管理障碍,人们提出了网络虚拟化和自治管理。然而,这两种有吸引力的技术都受到更新各种设备的困扰。SDN (Software-Defined Networking)将控制平面和数据平面分开。因此,一些网络控制和管理功能可以通过软件来实现。本文提出了一种基于sdn的具有自治管理功能的网络虚拟化体系结构(SDNVA)。SDNVA架构支持异构虚拟网络在同一物理网络上共存,并支持分层自治管理。此外,我们在我们的测试平台上评估了SDNVA,发现SDNVA架构可以感知拓扑变化并隔离多个虚拟网络。
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引用次数: 10
10 Gbit/s bidirectional optical wireless communication module for docking devices 10gbit /s双向光无线通信模块,用于对接设备
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063483
Michael Faulwasser, F. Deicke, Tobias Schneider
This paper presents a miniaturized optical wireless transceiver with data rates of 5 Gbit/s and 10 Gbit/s for docking systems. This system provides bidirectional half and full-duplex communication over a distance of 5 cm with a BER <; 1E-11. The transceiver package achieves a small form-factor of 16.1 × 8.7 × 7.5 mm. Performance constraints of the transmission system are discussed including experimentally obtained results. Furthermore, an implementation of a 5 Gbit/s docking demonstrator is practically evaluated.
本文介绍了一种用于对接系统的数据速率为5 Gbit/s和10 Gbit/s的小型化无线光收发器。该系统提供双向半双工和全双工通信,距离为5厘米,误码率<;1 e-11。收发器封装实现了16.1 × 8.7 × 7.5 mm的小尺寸。讨论了传输系统的性能约束,并给出了实验结果。此外,还对5gbit /s对接演示器的实现进行了实际评估。
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引用次数: 9
M2M data aggregation over cellular networks: signaling-delay trade-offs 蜂窝网络上的M2M数据聚合:信号延迟权衡
Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7570073
N. Kouzayha, Mona Jaber, Z. Dawy
Machine to machine (M2M) services are expected to have a compelling penetration in cellular networks. On account of predicted invading numbers of M2M devices, with restricted data needs, the resulting network signaling load poses a great challenge to cellular operators. Data aggregation is an attractive approach to deal with this situation; each aggregator node collects measurements from a group of M2M devices over a capillary network and relays the aggregated data over the cellular access network. In this paper, we conduct a detailed experimental study using state-of-the-art drive testing equipment in order to capture and analyze the impact of M2M data aggregation on signaling overhead in cellular networks with focus on static M2M devices such as smart meters and monitoring sensors. We complement this study with an analytical evaluation to quantify the trade-off between M2M data transmission delay and level of aggregation. Moreover, a case study is presented which provides practical insights on the feasibility, gains, and potential problems of implementing aggregation to reduce network signaling load for M2M smart meters.
机器对机器(M2M)服务预计将在蜂窝网络中具有令人信服的渗透。由于预计M2M设备的入侵数量和有限的数据需求,由此产生的网络信令负载给蜂窝运营商带来了巨大的挑战。数据聚合是处理这种情况的一种有吸引力的方法;每个聚合器节点通过毛细管网络从一组M2M设备收集测量数据,并通过蜂窝接入网中继聚合数据。在本文中,我们使用最先进的驱动测试设备进行了详细的实验研究,以捕获和分析M2M数据聚合对蜂窝网络中信令开销的影响,重点关注静态M2M设备,如智能电表和监控传感器。我们通过分析评估来补充本研究,以量化M2M数据传输延迟和聚合水平之间的权衡。此外,还提出了一个案例研究,提供了对实现聚合以减少M2M智能电表的网络信令负载的可行性、收益和潜在问题的实际见解。
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引用次数: 12
期刊
2014 IEEE Globecom Workshops (GC Wkshps)
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