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Coordinated beamforming in clustered HetNets: System design and performance evaluation 集群HetNets中的协调波束形成:系统设计和性能评估
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934863
S. Nagaraj, F. Hsieh, Deepak Pengoria, M. R. Raghavendra, M. Schamberger, M. Honig
{"title":"Coordinated beamforming in clustered HetNets: System design and performance evaluation","authors":"S. Nagaraj, F. Hsieh, Deepak Pengoria, M. R. Raghavendra, M. Schamberger, M. Honig","doi":"10.1109/WCNCW.2014.6934863","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934863","url":null,"abstract":"In this paper, we consider interference issues arising in HetNets where the small-cells are deployed in closely-spaced clusters. Such dense deployments pose an important challenge for scaling throughput proportional to the number of cells, since inter-cell interference becomes a key bottleneck for achieving high capacity. We examine key design issues around the use of coordinated beamforming (CBF) strategies for mitigating inter-small-cell interference in such clustered layouts. In particular, we show that system planning of the sounding reference signal (SRS), along with multi-user channel estimation approaches, are critical to realize the benefits of CBF. We also develop key notions of beneficiary sets and co-operative clusters for enabling such interference mitigation in cellular networks. Through extensive and detailed system simulations, we showcase the benefits of the proposed system designs for two use cases: (1) a dense urban Micro-cellular deployment, and (2) a clustered small-cell Stadium deployment. System parameter optimization of SRS power control and co-operative cluster size are also developed. Significant capacity gains are observed for both these deployments using the proposed system design in clustered small-cell topologies.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"116 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":"124137199","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: 0
Smart mobility management for D2D communications in 5G networks 5G网络中D2D通信的智能移动性管理
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934889
Osman N. C. Yilmaz, Zexian Li, K. Valkealahti, M. Uusitalo, M. Moisio, Petteri Lundén, C. Wijting
{"title":"Smart mobility management for D2D communications in 5G networks","authors":"Osman N. C. Yilmaz, Zexian Li, K. Valkealahti, M. Uusitalo, M. Moisio, Petteri Lundén, C. Wijting","doi":"10.1109/WCNCW.2014.6934889","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934889","url":null,"abstract":"Direct device-to-device (D2D) communications is regarded as a promising technology to provide low-power, high-data rate and low-latency services between end-users in the future 5G networks. However, it may not always be feasible to provide low-latency reliable communication between end-users due to the nature of mobility. For instance, the latency could be increased when several controlling nodes have to exchange D2D related information among each other. Moreover, the introduced signaling overhead due to D2D operation need to be minimized. Therefore, in this paper, we propose several mobility management solutions with their technical challenges and expected gains under the assumptions of 5G small cell networks.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"19 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":"132489866","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: 93
Scenarios for eNodeB and SON functions programmability eNodeB和SON函数可编程性的场景
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934887
I. B. Yahia, C. Destré, A. Quenot
{"title":"Scenarios for eNodeB and SON functions programmability","authors":"I. B. Yahia, C. Destré, A. Quenot","doi":"10.1109/WCNCW.2014.6934887","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934887","url":null,"abstract":"This paper studies the programmability of an eNodeB and its implication on positioning the SON functions. It proposes to extend the SDN controller layer with a mediation layer to manage a programmable eNodeB. We mainly focus on understanding the potential interest in having an “open” eNodeB and the range of possible scenarios to move its internal component into the SDN layers and how this impacts the SON functions positioning.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"87 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":"115442011","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
Context-aware Radio Resource Management in HetNets 上下文感知的HetNets无线电资源管理
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934867
N. Dimitriou, A. Zalonis, A. Polydoros, Adrian Kliks, O. Holland
{"title":"Context-aware Radio Resource Management in HetNets","authors":"N. Dimitriou, A. Zalonis, A. Polydoros, Adrian Kliks, O. Holland","doi":"10.1109/WCNCW.2014.6934867","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934867","url":null,"abstract":"In order to address the rapid increase in data-rate requirements in existing and upcoming wireless communication systems, one solution is to add more base-stations to achieve increased spectrum reuse. A Heterogeneous Network (HetNet) - consisting of a deployment of a variety of different types of small cells in a cellular infrastructure - is one manifestation of that approach. In this HetNet case, Radio Resource Management (RRM) techniques are important to balance and optimize the radio resource allocation among users of different systems by avoiding or controlling the generated interference. This paper provides a concise description of the role of RRM techniques in HetNets by analyzing the criteria and tradeoffs that are assumed, and presents a framework for the exploitation of the available context information within the HetNet environment, that leads to optimized spectrum usage.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"80 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":"114479414","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: 3
Increasing throughput and fairness for users in heterogeneous semi coordinated deployments 提高用户在异构半协调部署中的吞吐量和公平性
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934858
Plamen T. Semov, V. Poulkov, A. Mihovska, R. Prasad
{"title":"Increasing throughput and fairness for users in heterogeneous semi coordinated deployments","authors":"Plamen T. Semov, V. Poulkov, A. Mihovska, R. Prasad","doi":"10.1109/WCNCW.2014.6934858","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934858","url":null,"abstract":"Incorporation of the geographical positions of mobile users into the resource assignment process in uncoordinated heterogeneous cell deployments, can lead to significant improvements of cell and user throughputs. This paper proposes a novel algorithm that combines the knowledge of the users' positions with a Q-learning and game-theoretic approaches to enhance the dynamic physical resource allocation during carrier aggregation (CA) in a semi-and uncoordinated deployment of Heterogeneous Networks (HetNet). The algorithm is evaluated through MATLAB simulation setup and in terms of macro-and pico- cell and user throughputs. It has been shown that regardless of the approach chosen for physical resource assignment, positioning information increases the system and user performances. Use of Q-learning and positioning information leads to increased cell throughput without degrading the user experience. Application of a game theoretic approach for resource assignment leads to increased fairness for both macro-and pico- users.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"63 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":"114352972","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: 8
Exploring social networks for optimized user association in wireless small cell networks with device-to-device communications 通过设备对设备通信探索无线小型蜂窝网络中优化用户关联的社交网络
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934890
Muhammad Ikram Ashraf, M. Bennis, W. Saad, M. Katz
{"title":"Exploring social networks for optimized user association in wireless small cell networks with device-to-device communications","authors":"Muhammad Ikram Ashraf, M. Bennis, W. Saad, M. Katz","doi":"10.1109/WCNCW.2014.6934890","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934890","url":null,"abstract":"In this paper, we propose a novel social network aware approach for user association in wireless small cell networks. The proposed approach exploits social relationships between user equipments (UEs) and their physical proximity to optimize the network throughput. We formulate the problem as a matching game between UEs and their serving nodes (SNs). In our proposed game, the serving node can be a small cell base station (SCBS) or an important node with device-to-device capabilities. In this game, the SCBSs and UEs maximize their respective utility functions capturing both the spatial and social structures of the network. We show that the proposed game belongs to the class of matching games with externalities. Subsequently, we propose a distributed algorithm using which the SCBSs and UEs interact and reach a stable matching. We show the convergence of the proposed algorithm and study the properties of the resulting matching. Simulation results show that the proposed socially-aware user association approach can efficiently offload traffic while yielding a significant gain reaching up to 63% in terms of data rates as compared to the classical (social-unaware) approach.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"1 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":"130572369","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: 8
Analysis of radio access network performance for M2M communications in LTE-A at 800 MHz 800 MHz LTE-A下M2M通信的无线接入网性能分析
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934870
Fatemah A. Alsewaidi, D. Kaleshi, A. Doufexi
{"title":"Analysis of radio access network performance for M2M communications in LTE-A at 800 MHz","authors":"Fatemah A. Alsewaidi, D. Kaleshi, A. Doufexi","doi":"10.1109/WCNCW.2014.6934870","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934870","url":null,"abstract":"This paper studies Machine to Machine (M2M) communications over the Long Term Evolution-Advanced (LTE□A) operating at 800 MHz band which offers better propagation in indoor and outdoor environments. This research assumes a combination of M2M applications to evaluate the performance of Radio Access Network (RAN) under machines overload in a cellular network. We analyze the performance of M2M devices in the Random Access Channel (RACH) in a macro-cell environment at Bristol city, United Kingdom. Signal to Noise Ratio (SNR) level for each device is calculated depending on the path loss (PL) model generated by a propagation modeling tool. Also, we consider the limited resources in the Physical Downlink Control Channel (PDCCH). Different performance metrics are investigated such as the preamble collision probability, the idle probability, and the success probability. The probability of average preamble transmission time, probability of access success, and average access delay are examined. In addition, we analyze the effect of a number of system parameters on the M2M device performance.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"35 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":"132966049","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
Network assisted inter-cell codeword cancellation for interference-limited LTE-A and beyond 干扰受限LTE-A及以上的网络辅助小区间码字对消
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934860
Guangxia Zhou, Wen Xu, G. Bauch
{"title":"Network assisted inter-cell codeword cancellation for interference-limited LTE-A and beyond","authors":"Guangxia Zhou, Wen Xu, G. Bauch","doi":"10.1109/WCNCW.2014.6934860","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934860","url":null,"abstract":"Network assisted interference cancellation and suppression (NAICS) is being studied for 3GPP LTE-A to mitigate interference in multi-cell networks. To accomplish this goal, various interference mitigation techniques have been proposed. Contrary to conventional techniques, a rate splitting technique splits the interference in a way that part of the interference can be canceled at users through base station coordination. Rate splitting has been shown to have potential to achieve the channel capacity. This paper studies the benefits of the rate splitting scheme and proposes a new inter-cell codeword cancellation scheme for 3GPP LTE-A and beyond. Simulation results for interference-limited LTE-A scenarios show that the inter-cell codeword cancellation can be a very attractive interference coordination scheme due to its low complexity, low overhead and superior performance.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"12 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":"122394180","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
Improving UE SINR and networks energy efficiency based on femtocell self-optimization capability 基于飞基站自优化能力提高UE信噪比和网络能效
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934878
Xinsheng Zhao, Peng Chen
{"title":"Improving UE SINR and networks energy efficiency based on femtocell self-optimization capability","authors":"Xinsheng Zhao, Peng Chen","doi":"10.1109/WCNCW.2014.6934878","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934878","url":null,"abstract":"Femtocells, which provide an improved SINR for user equipment (UE) inside homes and offices, have been widely deployed jointly with macrocells in heterogeneous networks (Het-Net). With self-configuration and self-optimization functionalities of self-organization networks (SONs), femtocells can minimize the impact on macro cellular network by adapting transmit power according to surrounding environment. In this paper, we propose a novel self-optimization mechanism for femtocell, which can improve indoor coverage and promote energy efficiency of networks. It allows a femtocell to compare its distance from UE with a threshold (virtual cell size) periodically and turn on or off radio transmission accordingly. Simulation results show that the proposed mechanism achieves a higher indoor signal-to-interference-noise ratio (SINR) and capacity without adding interference to macro network, and gains an average reduction of approximately 58.5% in femtocell's transmit power consumption.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"41 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":"126089254","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
Parallel In-band signal detection with self-interference suppression for cognitive LTE 基于自干扰抑制的认知LTE并行带内信号检测
2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2014-04-06 DOI: 10.1109/WCNCW.2014.6934862
Hanwen Cao, Wei Jiang, T. Kaiser
{"title":"Parallel In-band signal detection with self-interference suppression for cognitive LTE","authors":"Hanwen Cao, Wei Jiang, T. Kaiser","doi":"10.1109/WCNCW.2014.6934862","DOIUrl":"https://doi.org/10.1109/WCNCW.2014.6934862","url":null,"abstract":"Recently, there has been an increasing interest in enhancing the mainstream cellular technology Long Term Evolution Advanced (LTE-A) with cognitive radio as one of the key enablers towards the fifth generation (5G) wireless communications. For dynamically accessing wider range of spectrum bands in a friendly manner, the cognitive LTE system should be able to discover the possible coexisting heterogeneous wireless systems in different bands. To this end, we propose a novel parallel in-band sensing scheme with effective self-interference suppression (SIS) in time and frequency domains, which doesn't require any modification to the existing standard specification or unrealistic a priori knowledge or extra hardware components. Preliminary simulation results show that over 10dB gain in signal-to-noise ratio (SNR) is achieved in detecting DVB-T signal submerged into very strong LTE self-interference.","PeriodicalId":425676,"journal":{"name":"2014 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"1 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":"130612771","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
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