2015 IEEE Globecom Workshops (GC Wkshps)最新文献_第10页

Handover Count Based UE Velocity Estimation in Hyper-Dense Heterogeneous Wireless Networks 基于切换计数的高密度异构无线网络UE速度估计

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414125

Arvind Merwaday, Ismail Güvenç

{"title":"Handover Count Based UE Velocity Estimation in Hyper-Dense Heterogeneous Wireless Networks","authors":"Arvind Merwaday, Ismail Güvenç","doi":"10.1109/GLOCOMW.2015.7414125","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2015.7414125","url":null,"abstract":"In wireless cellular networks with densely deployed base stations, knowing the velocities of the user equipments (UEs) is a key for efficient mobility management. A simple and efficient way to estimate a UE's velocity is by counting the number of handovers made by the UE during a predefined time window. Indeed, handover-count based mobility state detection has been standardized since Long Term Evolution (LTE) Release-8 specifications. The increasing density of small cells in wireless networks is advantageous, as it can help in accurate estimation of velocity and mobility state of a UE. In this paper, we model densely deployed small cells using stochastic geometry, and derive an approximation to the probability mass function of handover count as a function of UE velocity, small cell density, and time interval of handover count measurement. Then we derive Cramer-Rao lower bound (CRLB) for the velocity estimate of a UE, and also provide an unbiased estimator for the UE's velocity. Our analysis shows that the accuracy of velocity estimation increases with increasing small cell density and with increasing time interval of handover count measurement.","PeriodicalId":315934,"journal":{"name":"2015 IEEE Globecom Workshops (GC Wkshps)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116265450","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

Energy Coverage in Millimeter Wave Energy Harvesting Networks 毫米波能量收集网络的能量覆盖

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414219

T. Khan, A. Alkhateeb, R. Heath

引用次数: 15

Flexible Resource Allocation in 5G Ultra Dense Network with Self-Backhaul 基于自回程的5G超密集网络中的灵活资源分配

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414218

Peng Hao, Xiao Yan, Jian Li, Yu-Ngok Ruyue Li, Huaming Wu

{"title":"Flexible Resource Allocation in 5G Ultra Dense Network with Self-Backhaul","authors":"Peng Hao, Xiao Yan, Jian Li, Yu-Ngok Ruyue Li, Huaming Wu","doi":"10.1109/GLOCOMW.2015.7414218","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2015.7414218","url":null,"abstract":"Self-backhaul is flexible and cost efficient for ultra dense network (UDN) since it provides backhaul using the same wireless technology as access link. Content prediction and caching can lower the load on backhaul and improve user experience. Therefore, an algorithm named tri-stage fairness (TSF) is proposed to solve the resource allocation problem in UDN with self-backhaul and caching, in which cells without direct network connection (rTP) access core network through donor TP (dTP). In TSF, rTP determines to transmit files cached in rTP (rTP files) or the files not cached in rTP (dTP files) according to delay and link capacity, and allocate access link resource using proportional fairness algorithm. dTP allocates backhaul resource among its users and rTPs with fairness considerations, and decides the time each rTP spends on backhaul link. Fairness, efficiency, overhead and complexity are jointly considered in TSF. To facilitate system level simulation, a traffic model considering the influence of caching is also introduced. Simulation results suggest flexible resource allocation between access and backhaul link yield substantial performance gain.","PeriodicalId":315934,"journal":{"name":"2015 IEEE Globecom Workshops (GC Wkshps)","volume":"50 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133051783","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: 19

A Multichannel Transmitting and Assistant Nodes MAC Protocol for Mobile Ad Hoc Networks 移动自组织网络的多通道发送和辅助节点MAC协议

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7413983

Xin Yang, Ling Wang

引用次数: 3

Performance Evaluation of LAA-LBT Based LTE and WLAN's Co-Existence in Unlicensed Spectrum 基于LAA-LBT的LTE和WLAN在非授权频谱中共存的性能评估

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414071

Sreekanth Dama, Abhinav Kumar, K. Kuchi

{"title":"Performance Evaluation of LAA-LBT Based LTE and WLAN's Co-Existence in Unlicensed Spectrum","authors":"Sreekanth Dama, Abhinav Kumar, K. Kuchi","doi":"10.1109/GLOCOMW.2015.7414071","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2015.7414071","url":null,"abstract":"The license assisted access (LAA) along with listen before talk (LBT) mechanism for access of unlicensed spectrum by LTE is a recent study item of the 3rd Generation Partnership Project (3GPP). The LAA-LBT is expected to be a feature in Release 13 of LTE that will allow mobile operators to utilize the unlicensed spectrum as their secondary carrier for data offloading. However, the unlicensed spectrum is primarily occupied by 802.11 based WLAN devices. Hence, to ensure a fair sharing of this spectrum with WLAN devices, LAA should use a channel access scheme that is compatible with WLANs' distributed coordination function (DCF). Two such channel access schemes for LAA are under consideration with 3GPP. In this work, we thoroughly evaluate these channel access schemes under various traffic scenarios. We show that the fairness of these schemes largely depends on the signal/energy detection threshold used by the LAA-LBT mechanism. Further, through simulation results, we show that there exists a trade off in selection of the detection threshold such that high sensing threshold results in improved overall network throughput at the cost of WLAN's performance; whereas, low threshold results in improved WLAN's performance at the cost of the overall network performance.","PeriodicalId":315934,"journal":{"name":"2015 IEEE Globecom Workshops (GC Wkshps)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121816706","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: 42

Reflected Self-Interference Channel Measurement for mmWave Beamformed Full-Duplex System 毫米波波束形成全双工系统的反射自干扰信道测量

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414127

Byunghwan Lee, Jong-Bu Lim, Chaehee Lim, Byungchul Kim, J. Seol

引用次数: 28

Parity Balancing Path Flow Decomposition and Routing 奇偶均衡路径流分解与路由

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414053

B. Mumey, Samareh Shahmohammadi, Kathryn McManus, Sean Yaw

引用次数: 16

IoT for AAL: An Architecture via Information-Centric Networking 面向AAL的物联网:基于信息中心网络的架构

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414020

M. A. Hail, S. Fischer

{"title":"IoT for AAL: An Architecture via Information-Centric Networking","authors":"M. A. Hail, S. Fischer","doi":"10.1109/GLOCOMW.2015.7414020","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2015.7414020","url":null,"abstract":"Internet of Things (IoT) systems have become a main part in future internet research. In IoT, heterogeneous devices are connected to sense the environment or to observe special tasks. Many research fields use the seamless IoT infrastructure to interact between the integrated devices and diverse services. Considering the healthcare research, the number of elderly people is rapidly growing and they need more support in their life. Therefore, a new technology called Ambient Assisted Living (AAL) has been proposed to better increase the life quality of elderly people. In AAL, the devices are mostly connected wirelessly to each other and/or to a healthcare service centre. It is challenging to build such a system and its deployment should be seamless and flexible. Therefore, IoT provides all main characteristics necessary for AAL environment and applications, including heterogeneous devices. However, IoT devices are resource-constrained with energy and memory. Recently, Information-Centric Networking (ICN) has been established as a best communication paradigm for future internet, particularly in IoT. Based on hierarchically structured names, ICN matches the application pattern of IoT systems and provides an efficient and intelligent communication paradigm for both IoT and AAL (IoT-AAL) technologies. In this work, we design an IoT architecture for AAL via ICN approach which will effectively improve the performance of communication between the heterogeneous devices and services integrated in IoT-AAL.","PeriodicalId":315934,"journal":{"name":"2015 IEEE Globecom Workshops (GC Wkshps)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124162030","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: 29

Optimized ABS in LTE-Advanced Heterogeneous Networks with Adaptive Macro Cell Transmission LTE-Advanced异构网络中自适应宏小区传输的优化ABS

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414152

Mustapha Amara, Afef Feki

{"title":"Optimized ABS in LTE-Advanced Heterogeneous Networks with Adaptive Macro Cell Transmission","authors":"Mustapha Amara, Afef Feki","doi":"10.1109/GLOCOMW.2015.7414152","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2015.7414152","url":null,"abstract":"Interference coordination in heterogeneous cellular networks is a major bottleneck. In LTE-A (release 10), enhanced inter cell interference coordination (eICIC) scheme is proposed as an effective solution. It notably involves the approach of almost blank subframes (ABS) consisting of muting the macro cell during a set of predefined subframes. This offers the opportunity to the overlay small cells to schedule their most interfered users during these blanked periods. Nevertheless, this muting has the disadvantage of decreasing the performance of the macro cell. In order to fully optimize the resource allocation and maximize the total throughput of the entire system, we require solving a global NP hard non convex optimization problem. In this paper, we propose an improved eICIC technique with adaptive macro cell transmission during ABS periods. In fact, the original global optimization problem is decomposed into disjoint tractable sub-problems by means of macro cell users grouping. The sub-problems are then optimally solved through a solution combining joint spatial beamforming and fair user scheduling algorithm. Compared to the conventional ABS, simulation results show that the proposed scheme considerably reduces the impact of ABS on the macro cell throughput without reducing the gains achieved at the small cell.","PeriodicalId":315934,"journal":{"name":"2015 IEEE Globecom Workshops (GC Wkshps)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128065906","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

A Novel Physical Layer Security Scheme for MIMO Two-Way Relay Channels 一种新的MIMO双向中继信道物理层安全方案

2015 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2015-12-01 DOI: 10.1109/GLOCOMW.2015.7414118

Qiao Liu, G. Gong, Yong Wang, Hui Li

引用次数: 7