Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902590
Yousef AlNagar, Sameh Hosny, A. El-Sherif
Caching at Roadside Units (RSUs) is a promising technique to alleviate the load on network backhaul in Vehicular AdHoc Networks (VANETs). It also allows us to minimize communications latency between RSUs and connected vehicles, which are interested in massive multimedia contents. This work proposes novel proactive caching schemes at RSUs for the city mobility environment. We adopt the Manhattan city model, where streets are arranged in an organized manner and movable nodes are allowed to traverse along the grid of horizontal and vertical streets. Exploiting the information about vehicles demand and mobility patterns increases the caching capability and enables us to proactively cache desired files before its actual demand. The main objective of this work is to study how to minimize the communication latency for vehicles to receive their desired data items. We study non-clustered caching scheme where the optimization problem is formulated to find an optimal caching decision at each RSU. We extend our work by considering clustered caching scheme where RSUs in each cluster cooperate together to serve connected vehicles with minimum latency. Due to the complexity of these problems, we propose a sub-optimal caching policy for each scheme. We compare the performance of the optimal caching policy to that of the sub-optimal caching policy. Numerical results reveal that proactive caching has a great performance gain when compared to the reactive baseline scheme. Furthermore, results manifest that the clustered caching scheme has a significant performance over the non-clustered scheme.
{"title":"Proactive Caching for Vehicular Ad hoc Networks Using The City Model","authors":"Yousef AlNagar, Sameh Hosny, A. El-Sherif","doi":"10.1109/WCNCW.2019.8902590","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902590","url":null,"abstract":"Caching at Roadside Units (RSUs) is a promising technique to alleviate the load on network backhaul in Vehicular AdHoc Networks (VANETs). It also allows us to minimize communications latency between RSUs and connected vehicles, which are interested in massive multimedia contents. This work proposes novel proactive caching schemes at RSUs for the city mobility environment. We adopt the Manhattan city model, where streets are arranged in an organized manner and movable nodes are allowed to traverse along the grid of horizontal and vertical streets. Exploiting the information about vehicles demand and mobility patterns increases the caching capability and enables us to proactively cache desired files before its actual demand. The main objective of this work is to study how to minimize the communication latency for vehicles to receive their desired data items. We study non-clustered caching scheme where the optimization problem is formulated to find an optimal caching decision at each RSU. We extend our work by considering clustered caching scheme where RSUs in each cluster cooperate together to serve connected vehicles with minimum latency. Due to the complexity of these problems, we propose a sub-optimal caching policy for each scheme. We compare the performance of the optimal caching policy to that of the sub-optimal caching policy. Numerical results reveal that proactive caching has a great performance gain when compared to the reactive baseline scheme. Furthermore, results manifest that the clustered caching scheme has a significant performance over the non-clustered scheme.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122617087","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902623
Kotha Venugopalachary, Deepak Mishra, R. Saini, Vijaykumar Chakka
Prominent requirements such as high data rate demands across weaker coverage areas have lead to the utilization of cooperative communication system in fifth generation (5G) networks. In this regard, this paper presents a novel joint transmit power sharing and relay placement scheme for decode-and-forward relay assisted secure communication to a legitimate user in the presence of an untrusted user. Observing that the joint secure rate maximization problem for the trusted user is non-convex, first we present key insights on optimal power sharing between source and relay, and then derive an equivalent single variable problem on relay placement. Next, tight analytical bounds for optimal relay placement are discoursed to ultimately come up with a computationally efficient joint global optimization algorithm. Lastly, the selected numerical results validate the analysis and highlight the substantial gains achieved by the proposed joint design over benchmark scheme.
{"title":"Secrecy-Aware Jointly Optimal Transmit Power Budget Sharing and Trusted DF Relay Placement","authors":"Kotha Venugopalachary, Deepak Mishra, R. Saini, Vijaykumar Chakka","doi":"10.1109/WCNCW.2019.8902623","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902623","url":null,"abstract":"Prominent requirements such as high data rate demands across weaker coverage areas have lead to the utilization of cooperative communication system in fifth generation (5G) networks. In this regard, this paper presents a novel joint transmit power sharing and relay placement scheme for decode-and-forward relay assisted secure communication to a legitimate user in the presence of an untrusted user. Observing that the joint secure rate maximization problem for the trusted user is non-convex, first we present key insights on optimal power sharing between source and relay, and then derive an equivalent single variable problem on relay placement. Next, tight analytical bounds for optimal relay placement are discoursed to ultimately come up with a computationally efficient joint global optimization algorithm. Lastly, the selected numerical results validate the analysis and highlight the substantial gains achieved by the proposed joint design over benchmark scheme.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116828819","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902828
Meghna Khaturia, K. Appaiah, A. Karandikar
The technology advances in 5G are urban in nature and have a larger focus on high data rates, very low latency, and very high-speed mobility. Amidst this, the issues such as coverage and affordability are likely to persist which will widen the rural-urban divide even further. The connectivity needs of rural areas call for an affordable broadband network which can be accomplished if we design a low mobility energy-efficient network. We refer to such a network as the Frugal 5G network. Deployment of Wireless Local Area Network (WLAN) Access Points (APs) is a cost-effective method to provide high-speed low mobility coverage to rural areas. Backhauling the WLAN APs is a challenging task as fiber backhaul is generally unavailable in rural areas. We suggest a method to design the wireless backhaul network in order to serve the WLAN APs. The design objective is to maximize system performance with respect to network throughput and delay while reducing infrastructure utilization. We propose a backhaul design method based on Simulated Annealing (SA) to achieve our objective. Our analysis shows that the proposed algorithm enhances the backhaul network throughput by 24% while minimizing the infrastructure used.
{"title":"On Efficient Wireless Backhaul Planning for the “Frugal 5G” Network","authors":"Meghna Khaturia, K. Appaiah, A. Karandikar","doi":"10.1109/WCNCW.2019.8902828","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902828","url":null,"abstract":"The technology advances in 5G are urban in nature and have a larger focus on high data rates, very low latency, and very high-speed mobility. Amidst this, the issues such as coverage and affordability are likely to persist which will widen the rural-urban divide even further. The connectivity needs of rural areas call for an affordable broadband network which can be accomplished if we design a low mobility energy-efficient network. We refer to such a network as the Frugal 5G network. Deployment of Wireless Local Area Network (WLAN) Access Points (APs) is a cost-effective method to provide high-speed low mobility coverage to rural areas. Backhauling the WLAN APs is a challenging task as fiber backhaul is generally unavailable in rural areas. We suggest a method to design the wireless backhaul network in order to serve the WLAN APs. The design objective is to maximize system performance with respect to network throughput and delay while reducing infrastructure utilization. We propose a backhaul design method based on Simulated Annealing (SA) to achieve our objective. Our analysis shows that the proposed algorithm enhances the backhaul network throughput by 24% while minimizing the infrastructure used.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129661091","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902898
Navuday Sharma, M. Alam, Y. Moullec, Hassan Malik, M. Bennis, Sven Pärand
uRLLC (ultra-Reliable Low Latency Communications) requires a new paradigm in 5G cellular networks to satisfy extreme latency and reliability thresholds. Further, such constraints have a wide range due to different use case scenarios. Consequently, how to configure suitable radio frame structure that matches to the latency and reliability requirements of the given use-case is an open question. This article addresses the above-mentioned issue and provides a preliminary investigation and a feasible solution by exploiting antenna port selection index (APSI) calculated using fuzzy logic algorithm, which is further communicated through physical uplink control channel. Closed-form expressions of outage probability for the number of users, under given latency and reliability constraints have been provided with the mathematical proof and the results were simulated based on the prior availability of APSI. It is shown that outage probability improves up to 30% in case of dynamic radio frame configuration.
{"title":"Dynamic Radio Frame Configuration by Exploiting Uplink Control Channel for URLLC","authors":"Navuday Sharma, M. Alam, Y. Moullec, Hassan Malik, M. Bennis, Sven Pärand","doi":"10.1109/WCNCW.2019.8902898","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902898","url":null,"abstract":"uRLLC (ultra-Reliable Low Latency Communications) requires a new paradigm in 5G cellular networks to satisfy extreme latency and reliability thresholds. Further, such constraints have a wide range due to different use case scenarios. Consequently, how to configure suitable radio frame structure that matches to the latency and reliability requirements of the given use-case is an open question. This article addresses the above-mentioned issue and provides a preliminary investigation and a feasible solution by exploiting antenna port selection index (APSI) calculated using fuzzy logic algorithm, which is further communicated through physical uplink control channel. Closed-form expressions of outage probability for the number of users, under given latency and reliability constraints have been provided with the mathematical proof and the results were simulated based on the prior availability of APSI. It is shown that outage probability improves up to 30% in case of dynamic radio frame configuration.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"17 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121847678","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902883
Lei Xia, Ming Zhao, Zhigang Tian
5G has put forward higher demand for networking and simply evolving current system cannot meet the demand. Along with the basic Service-Based Architecture(SBA) standardized by 3GPP, 5G core network architecture is undergoing an evolution. In this paper, we design and evaluate Not-Only Stack(NoStack), a mobile network controller which features Message Bus(MB) and Global Network View(GNV), to address the potential enhancement to SBA. NoStack MB decouples business logic from inter-service communication. It improves service availability and agility. NoStack GNV decouples storage from computing to enable the sharing of service context between different services or service instances at the cost of acceptable increase on latency. It improves reliability and flexibility, as well as reduces signalling cost. The performance of NoStack is evaluated with initial attach procedure on OpenairInterface(OAI). The impact of NoStack on current system procedure is analysed as well. Finally, the outlook of NoStack in beyond 5G stage is shown.
{"title":"5G Service Based Core Network Design","authors":"Lei Xia, Ming Zhao, Zhigang Tian","doi":"10.1109/WCNCW.2019.8902883","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902883","url":null,"abstract":"5G has put forward higher demand for networking and simply evolving current system cannot meet the demand. Along with the basic Service-Based Architecture(SBA) standardized by 3GPP, 5G core network architecture is undergoing an evolution. In this paper, we design and evaluate Not-Only Stack(NoStack), a mobile network controller which features Message Bus(MB) and Global Network View(GNV), to address the potential enhancement to SBA. NoStack MB decouples business logic from inter-service communication. It improves service availability and agility. NoStack GNV decouples storage from computing to enable the sharing of service context between different services or service instances at the cost of acceptable increase on latency. It improves reliability and flexibility, as well as reduces signalling cost. The performance of NoStack is evaluated with initial attach procedure on OpenairInterface(OAI). The impact of NoStack on current system procedure is analysed as well. Finally, the outlook of NoStack in beyond 5G stage is shown.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129818376","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902830
G. A. Safdar, M. Rehman
Wireless networks are going through huge development due to growth in demand and supply of new wireless terminals having multiple features. Their application areas range from communication to infotainment and medical to gaming. Inclusion of large number of features make availability of sufficient power for long operational hours a key challenge in these devices. Hence, limited battery life of wireless terminals makes energy efficiency an important issue in wireless networks. Medium access control (MAC) protocols play an essential role in this context. In fact, MAC protocols can have a significant impact on energy consumption since both transmission and reception activities are very costly in terms of energy. A centralised polling based MAC avoids collisions and can guarantee a higher energy efficiency with respect to pure carrier sense multiple access (CSMA). Pointer controlled slot allocation and resynchronisation (PCSAR) protocol implements power conscious scheduling techniques to enable terminals enter prolonged sleep state, thereby improving the overall energy consumption of the network. This paper investigates the performance of PCSAR and compares it with the IEEE 802.11 standard infrastructure power save mode (PSM). Results demonstrate that PCSAR outperforms the standard mode in a composite rate WLAN scenario. Moreover, use of TDM based circuit switching makes PCSAR more reliable. These features make it a potentially good candidate for energy efficient reliable low latency communication for current (4G/LTE) and future (5G and beyond) applications.
由于具有多种功能的新型无线终端的需求和供应的增长，无线网络正在经历巨大的发展。它们的应用领域从通信到信息娱乐，从医疗到游戏。在这些设备中，包含大量的功能使得长时间运行所需的足够电力成为一个关键挑战。因此，无线终端有限的电池寿命使得能源效率成为无线网络中的一个重要问题。在这种情况下，介质访问控制(MAC)协议起着至关重要的作用。事实上，MAC协议可以对能源消耗产生重大影响，因为传输和接收活动在能源方面都非常昂贵。基于集中轮询的MAC避免了冲突，并且相对于纯载波感知多址(CSMA)可以保证更高的能源效率。PCSAR (Pointer controlled slot allocation and resynchronisation)协议采用功率自觉调度技术，使终端进入长时间休眠状态，从而提高网络的整体能耗。本文研究了PCSAR的性能，并将其与IEEE 802.11标准的基础架构省电模式(PSM)进行了比较。结果表明，PCSAR在复合速率WLAN场景下的性能优于标准模式。此外，采用时分复用电路交换使PCSAR更加可靠。这些特性使其成为当前(4G/LTE)和未来(5G及以后)应用中节能、可靠、低延迟通信的潜在候选者。
{"title":"Point Controlled Energy Efficient Medium Access in WLANs for Low Latency Communications","authors":"G. A. Safdar, M. Rehman","doi":"10.1109/WCNCW.2019.8902830","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902830","url":null,"abstract":"Wireless networks are going through huge development due to growth in demand and supply of new wireless terminals having multiple features. Their application areas range from communication to infotainment and medical to gaming. Inclusion of large number of features make availability of sufficient power for long operational hours a key challenge in these devices. Hence, limited battery life of wireless terminals makes energy efficiency an important issue in wireless networks. Medium access control (MAC) protocols play an essential role in this context. In fact, MAC protocols can have a significant impact on energy consumption since both transmission and reception activities are very costly in terms of energy. A centralised polling based MAC avoids collisions and can guarantee a higher energy efficiency with respect to pure carrier sense multiple access (CSMA). Pointer controlled slot allocation and resynchronisation (PCSAR) protocol implements power conscious scheduling techniques to enable terminals enter prolonged sleep state, thereby improving the overall energy consumption of the network. This paper investigates the performance of PCSAR and compares it with the IEEE 802.11 standard infrastructure power save mode (PSM). Results demonstrate that PCSAR outperforms the standard mode in a composite rate WLAN scenario. Moreover, use of TDM based circuit switching makes PCSAR more reliable. These features make it a potentially good candidate for energy efficient reliable low latency communication for current (4G/LTE) and future (5G and beyond) applications.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"32 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131003488","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902544
J. Visca, Matías Richart, J. Baliosian
Opportunistic Networks are networks in which data delivery is achieved taking advantage of fleeting and random encounters between mobile nodes. To study such networks, their models must take into account the stochastic nature of the processes involved. In this work we show how results from epidemiology can be used to study the behavior of opportunistic algorithms. In particular, we apply a Markov model for a logistic birth/death process to an epidemic networking deployment. The method is based on analyzing the expected lifetime of messages in the network, and allows to model networks were nodes have a limited buffer capacity.
{"title":"Stochastic Models for Opportunistic Networks","authors":"J. Visca, Matías Richart, J. Baliosian","doi":"10.1109/WCNCW.2019.8902544","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902544","url":null,"abstract":"Opportunistic Networks are networks in which data delivery is achieved taking advantage of fleeting and random encounters between mobile nodes. To study such networks, their models must take into account the stochastic nature of the processes involved. In this work we show how results from epidemiology can be used to study the behavior of opportunistic algorithms. In particular, we apply a Markov model for a logistic birth/death process to an epidemic networking deployment. The method is based on analyzing the expected lifetime of messages in the network, and allows to model networks were nodes have a limited buffer capacity.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127947088","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902517
H. Mauwa, A. Bagula, Emmanuel Tuyishimire
Dynamic spectrum markets for future wireless network devices will involve complex spectrum transactions. The spatio-temporal spectrum availability and the existence in the market of many diverse players with different power limit and channel bandwidth requirements, will call for new ways of allocating the spectrum [1]. Due to its perceived fairness and allocation efficiency, an auction strategy has been advocated as the best strategy for dynamic spectrum markets. However, designing an auction mechanism for a dynamic spectrum market is challenging because of the nature of the spectrum involved and the diverse secondary users, i.e., network players, involved, which results into an auction with many complementary requirements. Many attempts from researchers result into spectrum auctions that meet only a few of these requirements. In this paper, a three-stage spectrum auction that not only meet most of these requirement but also ensures optimal allocation of spectrum, is proposed. The strategy leads to efficient spectrum utilization.
{"title":"An Optimal Spectrum Allocation Strategy for Dynamic Spectrum Markets","authors":"H. Mauwa, A. Bagula, Emmanuel Tuyishimire","doi":"10.1109/WCNCW.2019.8902517","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902517","url":null,"abstract":"Dynamic spectrum markets for future wireless network devices will involve complex spectrum transactions. The spatio-temporal spectrum availability and the existence in the market of many diverse players with different power limit and channel bandwidth requirements, will call for new ways of allocating the spectrum [1]. Due to its perceived fairness and allocation efficiency, an auction strategy has been advocated as the best strategy for dynamic spectrum markets. However, designing an auction mechanism for a dynamic spectrum market is challenging because of the nature of the spectrum involved and the diverse secondary users, i.e., network players, involved, which results into an auction with many complementary requirements. Many attempts from researchers result into spectrum auctions that meet only a few of these requirements. In this paper, a three-stage spectrum auction that not only meet most of these requirement but also ensures optimal allocation of spectrum, is proposed. The strategy leads to efficient spectrum utilization.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121102992","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902841
Hirofumi Nakajo, Yuya Aoki, Keita Katagiri, T. Fujii
In 5G, carrier independent operators such as micro operator and local 5G that arrange small cells with high flexibility and scalability attract attention. In these kinds of systems, it is assumed that multiple small cells with different operators share the same frequency band, hence it is necessary to arrange the small cells as densely as possible with avoiding co-channel interference. However, as the density of small cells increases, the degradation of communication quality due to inter-cell interference becomes a crucial issue. It is well known that highly accurate radio environment recognition can improve the spectrum sharing performance and measurement-based spectrum database (MSD) attracts attention for realizing the recognition. In this paper, we propose a method to increase the density of small cells while satisfying communication quality in multiple small cells jointly working with the MSD. The proposed method estimates the probability distribution of signal power-to-interference plus noise power ratio (SINR) by using the MSD. Based on the estimated probability distribution, the interference power control that satisfies the permissible outage probability of spectrum shared system is performed, maximizes the number of small cells that can share the spectrums.
{"title":"High Density Spectrum Sharing Method among Micro Operators considering Spectrum Database","authors":"Hirofumi Nakajo, Yuya Aoki, Keita Katagiri, T. Fujii","doi":"10.1109/WCNCW.2019.8902841","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902841","url":null,"abstract":"In 5G, carrier independent operators such as micro operator and local 5G that arrange small cells with high flexibility and scalability attract attention. In these kinds of systems, it is assumed that multiple small cells with different operators share the same frequency band, hence it is necessary to arrange the small cells as densely as possible with avoiding co-channel interference. However, as the density of small cells increases, the degradation of communication quality due to inter-cell interference becomes a crucial issue. It is well known that highly accurate radio environment recognition can improve the spectrum sharing performance and measurement-based spectrum database (MSD) attracts attention for realizing the recognition. In this paper, we propose a method to increase the density of small cells while satisfying communication quality in multiple small cells jointly working with the MSD. The proposed method estimates the probability distribution of signal power-to-interference plus noise power ratio (SINR) by using the MSD. Based on the estimated probability distribution, the interference power control that satisfies the permissible outage probability of spectrum shared system is performed, maximizes the number of small cells that can share the spectrums.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122788021","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}
Pub Date : 2019-04-01DOI: 10.1109/WCNCW.2019.8902745
Muhammad Arif, Olli Liinamaa, Ijaz Ahmad, A. Pouttu, M. Ylianttila
This paper demonstrates the realization of different network services, 5G Test Network (5GTN) as a mobile network operator at the University of Oulu provides based on an open access network availability for research and innovation. A network platform with use case and service dedicated slicing is designed on the fundamental principles of ETSI compliant NFV Management and Network Orchestration (MANO) framework. The slicing is done primarily on the Core Networks (CN) with evolved packet core and ip multimedia subsystem functionalities in different slices. The virtual network function instances are instantiated in OpenStack and VMWare cloud environments using an NFV Orchestrator. The virtual instances and the required resources can be instantiated, terminated and scaled in a slice according to the requirements of the end user and nature of the use case. Focusing on different service demands, the paper demonstrates three test cases utilizing different slices from the components in the CN for each case. It also provides an overview on radio spectrum sharing possibility between two operators on a specified service level agreement with each operator having own CN infrastructure.
{"title":"On the Demonstration and Evaluation of Service-Based Slices in 5G Test Network using NFV","authors":"Muhammad Arif, Olli Liinamaa, Ijaz Ahmad, A. Pouttu, M. Ylianttila","doi":"10.1109/WCNCW.2019.8902745","DOIUrl":"https://doi.org/10.1109/WCNCW.2019.8902745","url":null,"abstract":"This paper demonstrates the realization of different network services, 5G Test Network (5GTN) as a mobile network operator at the University of Oulu provides based on an open access network availability for research and innovation. A network platform with use case and service dedicated slicing is designed on the fundamental principles of ETSI compliant NFV Management and Network Orchestration (MANO) framework. The slicing is done primarily on the Core Networks (CN) with evolved packet core and ip multimedia subsystem functionalities in different slices. The virtual network function instances are instantiated in OpenStack and VMWare cloud environments using an NFV Orchestrator. The virtual instances and the required resources can be instantiated, terminated and scaled in a slice according to the requirements of the end user and nature of the use case. Focusing on different service demands, the paper demonstrates three test cases utilizing different slices from the components in the CN for each case. It also provides an overview on radio spectrum sharing possibility between two operators on a specified service level agreement with each operator having own CN infrastructure.","PeriodicalId":121352,"journal":{"name":"2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683408","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}
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