{"title":"An OFDMA based concurrent multiuser MAC for upcoming IEEE 802.11ax","authors":"Qiao Qu, Bo Li, Mao Yang, Zhongjiang Yan","doi":"10.1109/WCNCW.2015.7122543","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122543","url":null,"abstract":"Recently, IEEE drew up a new task group named TGax to draft out the standard IEEE 802.11ax for next generation WLANs. However, the average throughput is very low due to the current medium access control (MAC) protocol. A promising solution for this problem is to draw Orthogonal Frequency Division Multiple Access (OFDMA) into IEEE 802.11ax to enable multiuser access. The key challenges of adopting OFDMA are synchronization and overhead reduction. In this paper, we propose an OFDMA based Multiple Access for IEEE 802.11ax (OMAX) protocol to solve both two challenges above. The whole channel physical channel sensing and fast backoff are adopted to ensure synchronization, while enhanced RTS/CTS mechanism and new frame structure are designed to reduce overhead. Moreover, the mathematic model of OMAX is formulated, and the performance of OMAX is analyzed. The analysis and simulation result indicate that the proposed OMAX protocol increases the throughput to 160%.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131277727","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}
{"title":"Joint margin-adaptive allocation scheme for bandwidth and power with GBR in cooperative networks","authors":"Min Xu, Xiaofeng Tao","doi":"10.1109/WCNCW.2015.7122555","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122555","url":null,"abstract":"This paper studies the problem of joint allocation of transmission power and bandwidth in cooperative networks. The goal is to minimize transmission energy consumption in a network with M coordinated transmission points (CTPs) under respective data rate constraints of N mobile terminals (MTs). We propose a joint power and bandwidth allocation scheme for downlink data transmission based on mathematical derivation, in which each MT should access up to two CTPs at the same time to obtain optimal allocation. The derivation leads to a universal modification to existing allocation algorithms reducing complexity from O(f(M;N)) to O(f(2;N)). It is then proved that when the available bandwidth is less than a certain value associated with channel status, coordinated data transmission is infeasible, i.e. the complexity can be further reduced to O(f(1;N)). Based on this scheme a simplified resource allocation algorithm is designed. Numerical results verify the validity and efficiency of proposed scheme in reducing energy consumption and complexity. The proposed scheme is feasible in homogeneous and heterogeneous cooperative networks for emerging green communications.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134116603","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}
Hongzhang Xu, Tiankui Zhang, Zhimin Zeng, Dantong Liu
{"title":"Distributed user association for delay-load tradeoffs in energy harvesting enabled HetNets","authors":"Hongzhang Xu, Tiankui Zhang, Zhimin Zeng, Dantong Liu","doi":"10.1109/WCNCW.2015.7122586","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122586","url":null,"abstract":"Energy harvesting is an emerging technology to save on-grid power and reduce carbon emissions in wireless communications. Terminals can utilize renewable energy obtained from environment by energy harvesting facilities. This paper investigates user association problem under a flow-level traffic model in energy harvesting enabled heterogeneous networks. In this paper, all the base stations are equipped with energy harvesting facilities and assumed to be solely powered by renewable energy. The average traffic delay is denoted using queuing theory, and a fairness index is redefined to evaluate the level of load balancing. Then a convex optimization problem is formulated in order to reduce average traffic delay and improve load balancing level. To this end, an iterative algorithm completed by user and base station respectively is proposed. Simulation results show that the user association algorithm improves the load balancing level with limited sacrifice on average traffic delay compared with the existing delay-optimal algorithm, and enables a flexible tradeoff between the average traffic delay and load balancing.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132268375","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}
Yuki Chosokabe, Tatsumi Uwai, Y. Nagao, L. Lanante, H. Ochi
{"title":"A channel adaptive hybrid aggregation scheme for next generation wireless LAN","authors":"Yuki Chosokabe, Tatsumi Uwai, Y. Nagao, L. Lanante, H. Ochi","doi":"10.1109/WCNCW.2015.7122546","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122546","url":null,"abstract":"Hybrid aggregation is a frame aggregation scheme in IEEE 802.11 Medium Access Control (MAC) which combines the use of MAC Service Data Unit Aggregation (A-MSDU) and MAC Protocol Data Unit Aggregation (A-MPDU) together. Using hybrid aggregation, we can get higher throughput than using either A-MSDU or A-MPDU only scheme. However, the throughput may decrease in some high Bit Error Rate (BER) conditions depending on the length of each A-MSDU frames in the hybrid aggregated frame. An A-MSDU frame has only one Frame Check Sequence (FCS) because A-MSDU is treated as one MSDU. Therefore, even if only one MSDU in an A-MSDU frame has bit errors, whole frame retransmission is needed. This is the disadvantage of A-MSDU aggregation scheme which affects the throughput of hybrid aggregation. To reduce this A-MSDU influence on hybrid aggregation, in this paper, we propose a novel channel adaptive aggregation scheme. By controlling the number of the MSDUs for A-MSDU aggregation, we can adapt the hybrid aggregation scheme to the channel condition. Using computer simulations, we show that the proposed hybrid aggregation scheme can reduce the frame error probability and improve the throughput more efficiently than conventional one.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129850689","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}
{"title":"Performance evaluation of stream control transport protocol over IEEE 802.11ac networks","authors":"Rung-Shiang Cheng","doi":"10.1109/WCNCW.2015.7122536","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122536","url":null,"abstract":"WiFi is currently the most widely used communication standard over wireless LAN. Facing the trend that broad band and networking quality are emphasized, the IETF SIGTRAN working group and IEEE 802.11standards working groups proposed a new-generation communication protocol, stream control transmission protocol (SCTP) and wireless LAN communication standard, IEEE 802.11ac/VHT for transport layer and data-link layer. We wish the bandwidth of WLAN can reach Gbps level transmission performance to fulfill user's requirement towards service quality of wireless communication. Although SCTP and IEEE 802.11ac are emerging communication protocols designed to increase wireless communication quality, there have not been related researches conducting performance analysis on the two communication protocols. The results confirm that SCTP provides a better transmission performance than the traditional transmission control protocol (TCP). Furthermore, applying SCTP over IEEE 802.11ac results in a faster and more stable network environment. Consequently, SCTP and IEEE 802.11ac play key roles in realizing the vision of broadband transmissions in the digital convergence era.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132434272","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}
M. Cotton, J. Wepman, J. Kub, S. Engelking, Y. Lo, H. Ottke, R. Kaiser, D. Anderson, M. Souryal, M. Ranganathan
{"title":"An overview of the NTIA/NIST spectrum monitoring pilot program","authors":"M. Cotton, J. Wepman, J. Kub, S. Engelking, Y. Lo, H. Ottke, R. Kaiser, D. Anderson, M. Souryal, M. Ranganathan","doi":"10.1109/WCNCW.2015.7122557","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122557","url":null,"abstract":"This paper provides an overview of a Spectrum Monitoring Pilot Program within the U.S. Department of Commerce. It provides background, motivation, goals, accomplishments, and plans for future work. We describe the development of a federated Measured Spectrum Occupancy Database (MSOD) architecture that allows organizations to host MSOD instances and contribute data to the overall program. We also describe progress in RF sensor R&D and deployment.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114821412","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}
Mariko Sekiguchi, K. Yano, T. Miyasaka, M. Ariyoshi, T. Kumagai
{"title":"QoE-oriented WLAN: smart access control scheme for maximising users’ QoE satisfaction","authors":"Mariko Sekiguchi, K. Yano, T. Miyasaka, M. Ariyoshi, T. Kumagai","doi":"10.1109/WCNCW.2015.7122563","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122563","url":null,"abstract":"We have proposed a concept of a new Quality of Experience (QoE) oriented wireless local area network (WLAN) on which many applications can run with sufficient quality even in congested environment. The proposed system is designed by taking users' QoE as a key metric. In this paper, we propose a practical functional flow featuring a new channel access control scheme based on loadable capacity prediction considering interference from other uncontrollable networks. Performance of the proposed QoE-oriented WLAN is evaluated via computer simulations. The evaluation results show that the proposed channel access control based on loadable capacity prediction can achieve significant improvement in application quality compared with conventional WLAN when there are not enough radio resources.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127448670","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}
{"title":"An Enhanced Communication Protocol for Anonymity and Location Privacy in WSN","authors":"Abdelshakour A. Abuzneid, T. Sobh, M. Faezipour","doi":"10.1109/WCNCW.2015.7122535","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122535","url":null,"abstract":"Wireless sensor networks (WSNs) consist of many sensors working as hosts. These sensors can sense a phenomenon and represent it in a form of data. There are many applications for WSNs such as object tracking and monitoring where the objects need protection. Providing an efficient location privacy solution would be challenging to achieve due to the exposed nature of the WSN. The communication protocol needs to provide location privacy measured by anonymity, observability, capture- likelihood and safety period. We extend this work to allow for countermeasures against semi-global and global adversaries. We present a network model that is protected against a sophisticated passive and active attacks using local, semi-global, and global adversaries.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127823007","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}
{"title":"Joint user association power control and beamforming in HetNets via distributed SOCP","authors":"Li-Liann Lu, Desheng Wang, Yingzhuang Liu","doi":"10.1109/WCNCW.2015.7122581","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122581","url":null,"abstract":"We consider in this paper an uplink coordinated beamforming problem for multi-cell heterogeneous networks (HetNets) whereby base stations are densely and co-channel deployed. A joint user-base station association, power control and beamforming scheme is presented for HetNets to minimize the power consumption. Such joint optimization is formulated as a mixed-integer second-order conic programming (MI-SOCP). To cope with this intractable problem, we develop two polynomial-time distributed methods. The first method is a two-stage solution, while the second method is a customized distributed solution by dual decomposition. The optimal tradeoff between data link gain and control link consumption using coordinated beamforming is able to be achieved by the two presented algorithms. Numerical results also show that, these two algorithms are efficient, and low complexity that consume much less run time comparing to the standard mixed-integer solver Gurobi.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115619676","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}
Mostafa Pakparvar, K. Chemmangat, D. Deschrijver, M. Mehari, D. Plets, T. Dhaene, J. Hoebeke, I. Moerman, L. Martens, W. Joseph
{"title":"Throughput optimization of wireless LANs by surrogate model based cognitive decision making","authors":"Mostafa Pakparvar, K. Chemmangat, D. Deschrijver, M. Mehari, D. Plets, T. Dhaene, J. Hoebeke, I. Moerman, L. Martens, W. Joseph","doi":"10.1109/WCNCW.2015.7122552","DOIUrl":"https://doi.org/10.1109/WCNCW.2015.7122552","url":null,"abstract":"Large scale growth of wireless networks and the scarcity of the electromagnetic spectrum are imposing more interference to the wireless terminals which jeopardize the Quality of Service offered to the end users. In order to address this kind of performance degradation, this paper proposes a novel experimentally verified cognitive decision engine which aims at optimizing the throughput of IEEE 802.11 links in presence of homogeneous IEEE 802.11 interference. The decision engine is based on a surrogate model that takes the current state of the wireless network as input and makes a prediction of the throughput. The prediction enables the decision engine to find the optimal configuration of the controllable parameters of the network. The decision engine was applied in a realistic interference scenario where utilization of the cognitive decision engine outperformed the case where the decision engine was not deployed by a worst case improvement of more than 100%.","PeriodicalId":123586,"journal":{"name":"2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127070684","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}