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2017 European Conference on Networks and Communications (EuCNC)最新文献

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From architecture to field trial: A millimeter wave based MHN system for HST Communications toward 5G 从架构到现场试验:面向5G的HST通信基于毫米波的MHN系统
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980752
H. Chung, Junhyeong Kim, Gosan Noh, B. Hui, I. Kim, Youngmin Choi, Changseob Choi, Myongsik Lee, Dongha Kim
This report presents a mobile hotspot network system to provide mobile Internet services for the passengers in the high speed trains. 3GPP has been working on enhanced mobile broadband under many deployment scenarios such as indoor hotspots, dense urban, rural, high speed, etc. The high speed deployment scenario deals with continuous coverage along track in the high speed trains considering mobility of up to 500 km/h. The design concept of the mobile hotspot network system is in line with the 3GPP deployment scenario. The system will eventually provide the fifth generation mobile network services based on the very wide bandwidth of millimeter waves. The designs and architecture of the system will be disclosed. Also, the performance and mobility management issue will be addressed. A proof-of-concept demonstration with the system prototype will be presented.
本文介绍了一种为高速列车乘客提供移动互联网服务的移动热点网络系统。3GPP一直致力于在室内热点、密集城市、农村、高速等多种部署场景下的增强型移动宽带。高速部署场景涉及高速列车沿轨道连续覆盖,考虑到高达500公里/小时的移动速度。移动热点网络系统的设计理念符合3GPP部署场景。该系统最终将提供基于毫米波极宽带宽的第五代移动网络服务。该系统的设计和架构将被披露。此外,还将讨论性能和移动性管理问题。将介绍系统原型的概念验证演示。
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引用次数: 17
A method for resolving users' collision in random access schemes in 5G systems 一种解决5G系统随机接入方案中用户冲突的方法
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980734
Mohammed Al-Imari
One of the challenges facing the deployment of massive machine type communications in mobile networks is the overload in the radio access. When high number of devices attempt to access the system in a random access procedure, a collision happens and the transmitted data will be lost. As the base-station is not aware of how many users are colliding, it will not be able to resolve the collision. In this paper, we propose a method that enables the base-station to detect the number of colliding users in random access schemes. The proposed method capitalizes on the unique feature of frequency quadrature amplitude modulation (FQAM) that the number of active subcarriers in a FQAM symbol depends on the number of users transmitting on that symbol. Thus, in the proposed method, FQAM will be used by the users for the random access, and the base-station will estimate the number of colliding users based on the number of active subcarriers. We provide in details the channel structure, procedures and theoretical derivation of the average number of active subcarriers. Numerical simulations show that by using the proposed method the number of colliding users can be accurately detected at the base-station. Furthermore, it is shown that, with the knowledge of the number of colliding users, the base-station can successfully retrieve the users' data, and the performance of the random access schemes can be significantly enhanced.
在移动网络中部署大规模机器类型通信所面临的挑战之一是无线接入过载。在随机访问过程中,当大量设备试图访问系统时,就会发生碰撞,传输的数据将丢失。由于基站不知道有多少用户正在碰撞,因此它将无法解决碰撞。在本文中,我们提出了一种使基站能够检测随机接入方案中碰撞用户数的方法。所提出的方法利用了频率正交调幅(FQAM)的独特特性,即FQAM符号中有源子载波的数量取决于在该符号上传输的用户数量。因此,在所提出的方法中,用户将使用FQAM进行随机接入,基站将根据活动子载波的数量估计碰撞用户的数量。我们详细地提供了信道结构、程序和平均活跃子载波数的理论推导。仿真结果表明,采用该方法可以准确地检测出基站内的碰撞用户数。此外,研究表明,在了解碰撞用户数的情况下,基站可以成功地检索到用户的数据,并且可以显著提高随机接入方案的性能。
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引用次数: 3
Verifying large-scale networks using NetCheck 使用NetCheck验证大规模网络
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980647
Matei Popovici
We present NetCheck, a network policy language for verifying large-scale networked infrastructures. NetCheck is expressive enough to capture basic network properties such as reachability and maintenance, as well as more complex behaviours such as end-to-end connectivity, traffic isolation or tunnel invariance. NetCheck is fully-automated, and does not require any intervention on the network under scrutiny. It is deployed on an automatically-generated model of the network data plane, expressed in the SEFL language. NetCheck relies on symbolic execution for exploring all feasible paths through the network.
我们提出NetCheck,一种用于验证大规模网络基础设施的网络策略语言。NetCheck的表现力足以捕捉基本的网络属性,如可达性和维护,以及更复杂的行为,如端到端连接,流量隔离或隧道不变性。NetCheck是全自动的,不需要对网络进行任何干预。它部署在自动生成的网络数据平面模型上,用SEFL语言表示。NetCheck依靠符号执行来探索网络中所有可行的路径。
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引用次数: 1
User satisfaction based resource allocation schemes for multicast in D2D networks D2D网络中基于用户满意度的组播资源分配方案
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980717
R. Jagadeesha, J. Sheu, W. Hon
The D2D communication has high potential to serve multiple users with high data rate within a proximity in the next generation cellular networks. In this paper, we consider a multicast scenario of D2D users where each user wishes to receive the same multicast data at varying data rates. Based on our best knowledge, finding an optimal solution to satisfy the user request in the said context requires unreasonable time. Therefore, we have proposed approximation algorithms with two objectives (i) maximize the satisfied throughput, (ii) maximize the number of satisfied users when the available resource blocks are limited. The simulation results show that the proposed algorithms offer a worst-case performance guarantee and outperform the other conventional schemes in terms of throughput, satisfied users count, and fairness.
在下一代蜂窝网络中,D2D通信具有在近距离内以高数据速率服务多个用户的巨大潜力。在本文中,我们考虑了D2D用户的组播场景,其中每个用户希望以不同的数据速率接收相同的组播数据。基于我们的最佳知识,在上述上下文中找到满足用户请求的最优解需要不合理的时间。因此,我们提出了具有两个目标的近似算法(i)最大化满意吞吐量,(ii)在可用资源块有限的情况下最大化满意用户的数量。仿真结果表明,该算法在最坏情况下提供了性能保证,并且在吞吐量、满意用户数和公平性方面优于其他传统算法。
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引用次数: 5
Hybrid paging and location tracking scheme for inactive 5G UEs 非活动5G终端的混合寻呼和位置跟踪方案
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980730
Sofonias Hailu, Mikko Säily
User Equipment (UE) paging and location tracking are influenced by the underling state handling model. There are recent proposals to introduce a new RRC state called RRC Inactive as a main state for inactive UEs in 5th Generation (5G) cellular systems. One of the characteristics of the new state is that the interface between the Radio Access Network (RAN) and Core Network (CN) is kept. Considering this characteristic, there are proposals for a RAN controlled paging and location tracking schemes for RRC Inactive UEs. In this paper, we show that this approach is not always beneficial, especially for high mobility UEs. Instead, we propose a hybrid paging and location tracking scheme where both RAN and CN are involved in the paging and location tracking of RRC Inactive UEs. This is done transparently to the UE. We further propose a hierarchical paging and location tracking scheme to reduce the signaling overhead from paging and location tracking updates. The scheme is applicable to both RAN based and CN based paging and location tracking schemes.
用户设备(UE)寻呼和位置跟踪受底层状态处理模型的影响。最近有人提议引入一种新的RRC状态,称为RRC Inactive,作为第五代(5G)蜂窝系统中非活动ue的主要状态。新状态的特点之一是保留了无线接入网(RAN)和核心网(CN)之间的接口。考虑到这一特点,有针对RRC非活动终端的RAN控制分页和位置跟踪方案的建议。在本文中,我们证明了这种方法并不总是有益的,特别是对于高迁移率的ue。相反,我们提出了一种混合分页和位置跟踪方案,其中RAN和CN都参与RRC非活动ue的分页和位置跟踪。这对UE是透明的。我们进一步提出了一种分层分页和位置跟踪方案,以减少分页和位置跟踪更新带来的信令开销。该方案适用于基于RAN和基于CN的寻呼和位置跟踪方案。
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引用次数: 29
On wireless networks for the era of mixed reality 混合现实时代的无线网络
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980745
K. Doppler, E. Torkildson, Jan Bouwen
Mixed reality services promise to enhance our lives by providing us with real-time immersive media and contextual information delivered through lightweight wireless head mounted displays. We introduce a perception based mixed reality video streaming platform that reduces the data rate requirements for such services from several Gbps to 100 Mbps over a network that supports a 10 ms Round-Trip-Time. We expect mixed reality services first to be delivered through indoor and campus area networks and later through ubiquitous 5G networks. Our simulation and measurement results show that massive MIMO and millimeter wave transmissions can provide the required aggregate multi-Gigabit indoor data rates to support mixed reality services.
混合现实服务承诺通过轻型无线头戴式显示器为我们提供实时沉浸式媒体和上下文信息,从而改善我们的生活。我们引入了一个基于感知的混合现实视频流平台,该平台通过支持10毫秒往返时间的网络,将此类服务的数据速率要求从几Gbps降低到100 Mbps。我们预计混合现实服务将首先通过室内和校园局域网提供,然后通过无处不在的5G网络提供。我们的仿真和测量结果表明,大规模MIMO和毫米波传输可以提供所需的聚合千兆室内数据速率,以支持混合现实业务。
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引用次数: 16
Architecture modularisation for next generation mobile networks 下一代移动网络的架构模块化
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980664
Xueli An, R. Trivisonno, H. Einsiedler, D. Hugo, Kay Haensge, Xiaofeng Huang, Qing Shen, Daniel Corujo, K. Mahmood, D. Trossen, M. Liebsch, Filipe A. Leitao, Cao-Thanh Phan, F. Klamm
The journey towards the deployment of next generation networks has recently accelerated, driven by the joint effort of research and standards organisations. Some key innovative design concepts have been recently consolidating and are going to characterise the notable discontinuity between 4G and 5G systems. Among those, Architecture Modularisation, discussed in this paper, is regarded by the authors as the essential design principle to build a flexible network architecture natively supporting Network Slicing. According to this concept, conventional monolithic network functions, often corresponding to physical network elements in the existing systems, are to be split into basic building blocks defined with the proper granularity, allowing the definition of different logical architectures, tailored to 5G use cases. In this paper, a modularisation methodology is presented as a criterion to define the ‘right’ set of basic building blocks. Defined through this proposed methodology, the set of basic building blocks and the relating interfacing models are discussed. The paper concludes by proposing a candidate modular 5G network architecture, and comparing it with alternatives currently discussed within 3GPP standard working groups.
在研究和标准组织的共同努力下,下一代网络部署的进程最近加快了。一些关键的创新设计概念最近得到了巩固,并将成为4G和5G系统之间显著不连续性的特征。其中,本文所讨论的架构模块化被认为是构建一个灵活的网络架构的基本设计原则,以支持网络切片。根据这一概念,传统的单片网络功能(通常对应于现有系统中的物理网络元素)将被拆分为具有适当粒度定义的基本构建块,从而允许定义不同的逻辑架构,以适应5G用例。在本文中,提出了模块化方法作为定义“正确”基本构建块集的标准。通过提出的方法定义,讨论了基本构建块集和相关的接口模型。论文最后提出了一个候选模块化5G网络架构,并将其与3GPP标准工作组目前讨论的替代方案进行了比较。
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引用次数: 5
A modified proportional fair radio resource management scheme in virtual RANs 一种改进的虚拟局域网比例公平无线资源管理方案
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980724
B. Rouzbehani, L. Correia, Luisa Caeiro
This paper proposes a model for radio resource management in virtualised radio access networks, based on the criterion of proportional fairness, which is also adapted to deal with the situations when there is not enough capacity to serve all subscribers with an acceptable level of service, the so-called the extreme case. A single virtual network operator providing four different classes of services negotiates the required capacity to serve its subscribers, from a centralised entity called Virtual Radio Resource Management (VRRM). The main goals of VRRM are to maximise the utilisation of resources, while maintaining a level of fairness in the allocation of data rate among different services. However, under extreme situations, the algorithm is modified to react differently, according to the offered traffic load. In general, it keeps serving a number of users having the stringiest Quality of Service (QoS), with the minimum guaranteed data rate, while the rest of users performing lowest QoS priority services are increasingly delayed. The performance of the proposed algorithm is evaluated through a practical heterogeneous network scenario and different evaluation metrics. Results show that when there is enough capacity, the algorithm is capable of satisfying the predefined service level agreements, while keeping fairness, whereas under extreme situations, it delays just enough number of users to free capacity for high priority services. In both cases, the algorithm is capable of maximising the utilisation of resources.
本文提出了一种基于比例公平准则的虚拟无线接入网无线资源管理模型,该模型也适用于处理容量不足,无法以可接受的服务水平向所有用户提供服务的极端情况。提供四种不同服务类别的单个虚拟网络运营商通过一个称为虚拟无线电资源管理(VRRM)的中央实体协商为其用户提供服务所需的容量。VRRM的主要目标是最大限度地利用资源,同时在不同服务之间保持公平分配数据速率。然而,在极端情况下,算法被修改以根据提供的流量负载做出不同的反应。一般来说,它继续为具有最严格的服务质量(QoS)和最低保证数据速率的用户提供服务,而其他具有最低QoS优先级服务的用户则越来越延迟。通过一个实际的异构网络场景和不同的评估指标对该算法的性能进行了评估。结果表明,在容量足够的情况下,该算法能够在保证公平性的前提下满足预定义的服务水平协议,而在极端情况下,该算法只会延迟足够数量的用户以释放高优先级服务的容量。在这两种情况下,该算法都能够最大限度地利用资源。
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引用次数: 6
On the optimal Space-Frequency to Frequency mapping in indoor single-pair RoC fronthaul 室内单对RoC前传最优空频映射研究
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980784
Andrea Matera, U. Spagnolini
Centralized Radio Access Network (C-RAN) architecture is the enabling technology for the deployment of massive number of antennas essential to meet the requirements of next generation (5G and beyond) mobile systems. In C-RAN the fronthaul links between processing Base Band Units (BBUs) and Remote Antenna Units (RAUs) are conventionally based on fiber optic, although its deployment cost can be excessive. Radio over Copper (RoC) is an alternative/complementary technology for the fronthauling especially suitable for self-powered indoor deployment since it leverages on the pre-existing LAN cables. In this paper we consider a RoC C-RAN architecture as a low-cost bandwidth-efficient in-building solution to guarantee enhanced indoor coverage as required by 5G and beyond mobile systems. In particular, the focus of the paper is to gain insights into the optimal resource allocation to/from the RAU equipped with multiple antennas or multiple radios (e.g., 5G and WiFi) and the cable resources to fully exploit the capabilities of the twisted-pair cable over the last 50–100m. Numerical results validate the proposed method considering a realistic radio environment where the performance of indoor users are impaired by the interference of outdoor non-cooperating cells.
集中式无线接入网(C-RAN)架构是部署大量天线的使能技术,对于满足下一代(5G及以后)移动系统的要求至关重要。在C-RAN中,处理基带单元(BBUs)和远程天线单元(rau)之间的前传链路通常基于光纤,尽管其部署成本可能过高。铜缆无线电(RoC)是一种替代/补充技术,特别适用于自供电室内部署,因为它利用了现有的LAN电缆。在本文中,我们将RoC C-RAN架构视为一种低成本、带宽高效的建筑内解决方案,以保证5G及以上移动系统所需的增强室内覆盖。特别是,本文的重点是深入了解配备多天线或多无线电(例如5G和WiFi)的RAU和电缆资源的最佳资源分配,以充分利用最后50 - 100米的双绞线电缆的能力。数值结果验证了该方法的有效性,该方法考虑了室外非合作小区干扰对室内用户性能的影响。
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引用次数: 12
Experimental evaluation of hierarchical control over multi-domain wireless/optical networks 多域无线/光网络分层控制的实验评估
Pub Date : 2017-06-01 DOI: 10.1109/EuCNC.2017.7980665
J. Mangues‐Bafalluy, José Núñez-Martínez, R. Casellas, A. Mayoral, J. Baranda, J. X. Salvat, Andres Garcia-Saavedra, R. Vilalta, I. Pascual, Xi Li, R. Martínez, R. Muñoz
5G-Crosshaul aims at reducing network costs by designing an integrated transport (fronthaul/backhaul) network able to fulfill 5G requirements. Such transport networks will consist of heterogeneous technologies that need end-to-end orchestration. In this paper, we evaluate a hierarchical resource management framework for multi-domain wireless/optical networks. More specifically, we deploy a hierarchical 5G-Crosshaul Control Infrastructure (XCI) where child controllers deal with the specificities of each technology whilst the parent controller is in charge of offering to a resource management application (RMA) the appropriate abstraction level and an end-to-end view. To understand the end-to-end behavior related with service setup, we evaluate each network segment (wireless and optical), each plane (application and control planes), and each layer of the hierarchy inside the XCI. In particular, we evaluate the aggregated path setup time (in the order of seconds) as well as each component (wireless domain contributes with tens of ms and multi-layer optical network with hundreds of ms per layer for a total in the order of seconds). Path restoration results reveal the importance of leveraging control of child controllers when requiring fast response to unexpected data plane events, since an important part of the setup delay observed is due to the RMA-parent-child controller interaction and sequential message handling.
5G- crossshaul旨在通过设计能够满足5G要求的集成传输(前传/回程)网络来降低网络成本。这样的传输网络将由需要端到端编排的异构技术组成。在本文中,我们评估了一个多域无线/光网络的分层资源管理框架。更具体地说,我们部署了一个分层的5g交叉控制基础设施(XCI),其中子控制器处理每种技术的特性,而父控制器负责向资源管理应用程序(RMA)提供适当的抽象级别和端到端视图。为了理解与服务设置相关的端到端行为,我们评估了XCI内部的每个网段(无线和光学)、每个平面(应用程序和控制平面)和每个层次结构层。特别是,我们评估了聚合路径设置时间(以秒为数量级)以及每个组件(无线域贡献数十毫秒,多层光网络贡献数百毫秒,总计以秒为数量级)。路径恢复结果揭示了在需要快速响应意外数据平面事件时利用子控制器控制的重要性,因为观察到的设置延迟的重要部分是由于rma -父子控制器交互和顺序消息处理。
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引用次数: 3
期刊
2017 European Conference on Networks and Communications (EuCNC)
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