Pub Date : 2015-12-03DOI: 10.1109/PIMRC.2015.7343272
Md. Sakir Hossain, T. Shimamura
Peak to Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) is a long-standing problem which has been hindering its performance for decades. In this paper, we propose a new PAPR reduction scheme based on shifting pilot locations among the data symbols. Since no side information is sent to the receiver about the pilot locations, a novel pilot detection algorithm is devised exploiting the pilot power and the relative constant distance property of pilots. The proposed scheme attains around 2 dB PAPR reduction. The pilot detection accuracy is shown to be very excellent ranging from 80% to 99% at 0 dB of Signal to Noise Ratio (SNR) in different parameters. This scheme is very spectrally efficient with reduced complexity without degrading BER performance significantly.
{"title":"PAPR reduction of OFDM through pilot shifting","authors":"Md. Sakir Hossain, T. Shimamura","doi":"10.1109/PIMRC.2015.7343272","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343272","url":null,"abstract":"Peak to Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) is a long-standing problem which has been hindering its performance for decades. In this paper, we propose a new PAPR reduction scheme based on shifting pilot locations among the data symbols. Since no side information is sent to the receiver about the pilot locations, a novel pilot detection algorithm is devised exploiting the pilot power and the relative constant distance property of pilots. The proposed scheme attains around 2 dB PAPR reduction. The pilot detection accuracy is shown to be very excellent ranging from 80% to 99% at 0 dB of Signal to Noise Ratio (SNR) in different parameters. This scheme is very spectrally efficient with reduced complexity without degrading BER performance significantly.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133386453","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343539
Hongnian Xing, M. Renfors
Device-to-Device (D2D) communication has been a hot research topic in the recent years. Among different D2D use cases, the integration of D2D and conventional cellular network is one of the most attractive schemes. This approach has been investigated in recent academic and standardization studies, since such a combination improves the efficiency of the overall system in both resource and power domains. It also improves the coverage of the cellular network and improves the cell edge performance. In this paper, such a system combining D2D and OFDMA/SC-FDMA based cellular network is investigated, targeting at simple and effective resource management algorithms. The network level performance of a system using proposed algorithms is evaluated by simulations. We propose the use of separate resource pools for cellular and D2D UEs, with in-cell resource reuse utilizing the D2D resource pool. This is shown to provide significant gains in terms of spectrum efficiency and network level performance, especially at the cell edge.
{"title":"Resource management schemes for network assisted device-to-device communication for an integrated OFDMA cellular system","authors":"Hongnian Xing, M. Renfors","doi":"10.1109/PIMRC.2015.7343539","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343539","url":null,"abstract":"Device-to-Device (D2D) communication has been a hot research topic in the recent years. Among different D2D use cases, the integration of D2D and conventional cellular network is one of the most attractive schemes. This approach has been investigated in recent academic and standardization studies, since such a combination improves the efficiency of the overall system in both resource and power domains. It also improves the coverage of the cellular network and improves the cell edge performance. In this paper, such a system combining D2D and OFDMA/SC-FDMA based cellular network is investigated, targeting at simple and effective resource management algorithms. The network level performance of a system using proposed algorithms is evaluated by simulations. We propose the use of separate resource pools for cellular and D2D UEs, with in-cell resource reuse utilizing the D2D resource pool. This is shown to provide significant gains in terms of spectrum efficiency and network level performance, especially at the cell edge.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"27 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122585699","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343429
Stanislaus Iwelski, Erfan Majeed, Z. Bai, G. Bruck, P. Jung
Coordinated multipoint (CoMP) transmission is a key technique in 4G long term evolution (LTE) systems to provide the ubiquitous broadband communication with cell edge free experience at the user equipment (UE). However, as the transmit signals will reach the UE at several and varying delays, practical CoMP networks might experience large timing offsets (TOs), imposing a significant performance loss. In this paper we focus on implicit feedback generation for practical CoMP joint processing (JP)-joint transmission (JT) networks suffering from TOs. We show that conventional implicit feedback schemes prohibit the expected gain in the downlink, getting outperformed by open-loop transmission schemes and call the benefits of channel state information (CSI) feedback for CoMP JP-JT networks into question. Analytically we prove that the mapping of CSI-reference signal (RS) on different subcarriers imposes multiple phase offsets on the covariance matrix, leading to improper precoding vector selection, while imbalanced TOs among the transmitters limit coherent signal demodulation at the UE. With numerical results we show that estimating and compensating the phase offsets reliable precoding vector selection and phase feedback for coherent signal demodulation can be obtained and as a result considerable improvements for practical CoMP JP-JT networks can be achieved in presence of varying TOs.
{"title":"Reliable feedback generation in unsynchronized joint-processing CoMP transmission networks","authors":"Stanislaus Iwelski, Erfan Majeed, Z. Bai, G. Bruck, P. Jung","doi":"10.1109/PIMRC.2015.7343429","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343429","url":null,"abstract":"Coordinated multipoint (CoMP) transmission is a key technique in 4G long term evolution (LTE) systems to provide the ubiquitous broadband communication with cell edge free experience at the user equipment (UE). However, as the transmit signals will reach the UE at several and varying delays, practical CoMP networks might experience large timing offsets (TOs), imposing a significant performance loss. In this paper we focus on implicit feedback generation for practical CoMP joint processing (JP)-joint transmission (JT) networks suffering from TOs. We show that conventional implicit feedback schemes prohibit the expected gain in the downlink, getting outperformed by open-loop transmission schemes and call the benefits of channel state information (CSI) feedback for CoMP JP-JT networks into question. Analytically we prove that the mapping of CSI-reference signal (RS) on different subcarriers imposes multiple phase offsets on the covariance matrix, leading to improper precoding vector selection, while imbalanced TOs among the transmitters limit coherent signal demodulation at the UE. With numerical results we show that estimating and compensating the phase offsets reliable precoding vector selection and phase feedback for coherent signal demodulation can be obtained and as a result considerable improvements for practical CoMP JP-JT networks can be achieved in presence of varying TOs.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127727573","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343492
Liang Fan, Xiaomei Wang, Yan Chen
In spite of recent progress of the wireless communication technology, the high bit error rate always restrains its better transmission efficiency. Especially, the errors in protocol header would incur the discard of valid information in the check-failure packets. In order to improve the utilization of transmitted data, an iterative header recovery scheme between two associated layers is proposed in this paper exploiting the helpful inherent redundancy of network protocol stacks, raising the anti-noise ability of the protocol header. It develops a novel comprehension of two layers error detecting codes after regarding them as a special concatenated encoding model. With the extrinsic information of the two layers exchanging within each other, better performance of protocol header correction can be achieved. Simulation results show that the proposed algorithm outperforms the original ones which just make use of the error detecting codes in a single layer.
{"title":"Algorithm of protocol header recovery based on iteration between layers","authors":"Liang Fan, Xiaomei Wang, Yan Chen","doi":"10.1109/PIMRC.2015.7343492","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343492","url":null,"abstract":"In spite of recent progress of the wireless communication technology, the high bit error rate always restrains its better transmission efficiency. Especially, the errors in protocol header would incur the discard of valid information in the check-failure packets. In order to improve the utilization of transmitted data, an iterative header recovery scheme between two associated layers is proposed in this paper exploiting the helpful inherent redundancy of network protocol stacks, raising the anti-noise ability of the protocol header. It develops a novel comprehension of two layers error detecting codes after regarding them as a special concatenated encoding model. With the extrinsic information of the two layers exchanging within each other, better performance of protocol header correction can be achieved. Simulation results show that the proposed algorithm outperforms the original ones which just make use of the error detecting codes in a single layer.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127972110","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343401
Junyang Shen, Dengkui Zhu, Boyu Li, Ping Liang
The millimeter Wave (mmWave) is considered as a promising technology of the future fifth-generation wireless systems due to the currently underutilized multi-GHz spectrum surrounding the 60GHz carrier frequency, particularly with the recent advances in low cost sub-terahertz semiconductor circuitry. Since the mmWave suffers high attenuation during transmission, the repeater is a key technique to enable mmWave systems with seamless coverage. This paper considers the following practical design issues of Amplified-and-Forward Repeater (AFR) enhanced mmWave systems. First, the distribution of excess delay through multiple AFR hops is derived, which helps the design of cyclic-prefix length to avoid inter-symbol interference in orthogonal frequency division multiplexing systems. In addition, we show that the AFR decreases the channel coherence bandwidth and then propose a novel AFR design with a finite impulse response filter based channel equalizer to address this problem. Simulation results show that the proposed method is able to significantly increase channel coherence bandwidth and effectively reduce bit error rate.
{"title":"Repeater-enhanced millimeter-wave systems in multi-path environments","authors":"Junyang Shen, Dengkui Zhu, Boyu Li, Ping Liang","doi":"10.1109/PIMRC.2015.7343401","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343401","url":null,"abstract":"The millimeter Wave (mmWave) is considered as a promising technology of the future fifth-generation wireless systems due to the currently underutilized multi-GHz spectrum surrounding the 60GHz carrier frequency, particularly with the recent advances in low cost sub-terahertz semiconductor circuitry. Since the mmWave suffers high attenuation during transmission, the repeater is a key technique to enable mmWave systems with seamless coverage. This paper considers the following practical design issues of Amplified-and-Forward Repeater (AFR) enhanced mmWave systems. First, the distribution of excess delay through multiple AFR hops is derived, which helps the design of cyclic-prefix length to avoid inter-symbol interference in orthogonal frequency division multiplexing systems. In addition, we show that the AFR decreases the channel coherence bandwidth and then propose a novel AFR design with a finite impulse response filter based channel equalizer to address this problem. Simulation results show that the proposed method is able to significantly increase channel coherence bandwidth and effectively reduce bit error rate.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128932502","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343279
Heather King, M. Flanagan
A new joint message-passing decoder is presented for use in a two-user cooperative wireless network. This decoder is designed for use with the diversity network coding scheme of Xiao et al. , which uses nonbinary network codes together with channel coding to achieve high diversity gains. The proposed joint decoder, together with appropriate modifications to the cooperative protocol of Xiao and Skoglund (2010), significantly reduces the required implementation complexity both at the relay nodes and at the receiver. The destination's joint decoder structure consists of two parallel weighted bit flipping (PWBF) decoders which exchange extrinsic soft/hard information regarding the two users' packets. It is demonstrated through simulations that the proposed joint decoder achieves not only the same diversity gain as in the work of Xiao and Skoglund (2010), but also approximately 5dB of additional coding gain. It is also notable that a significant improvement in system performance can be achieved after only two joint decoding iterations.
{"title":"Joint weighted bit-flipping decoder for use in diversity network coding","authors":"Heather King, M. Flanagan","doi":"10.1109/PIMRC.2015.7343279","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343279","url":null,"abstract":"A new joint message-passing decoder is presented for use in a two-user cooperative wireless network. This decoder is designed for use with the diversity network coding scheme of Xiao et al. , which uses nonbinary network codes together with channel coding to achieve high diversity gains. The proposed joint decoder, together with appropriate modifications to the cooperative protocol of Xiao and Skoglund (2010), significantly reduces the required implementation complexity both at the relay nodes and at the receiver. The destination's joint decoder structure consists of two parallel weighted bit flipping (PWBF) decoders which exchange extrinsic soft/hard information regarding the two users' packets. It is demonstrated through simulations that the proposed joint decoder achieves not only the same diversity gain as in the work of Xiao and Skoglund (2010), but also approximately 5dB of additional coding gain. It is also notable that a significant improvement in system performance can be achieved after only two joint decoding iterations.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116414915","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343474
Ying Loong Lee, J. Loo, T. Chuah
In Long Term Evolution (LTE)/LTE-Advanced (LTE-A) networks, hybrid access femtocells have been introduced as a tradeoff between closed and open access femtocells. However, quality of service (QoS) provisioning in hybrid access femtocells has become more challenging due to different user priority and traffic classes. Existing studies do not consider the LTE/LTE-A protocols and QoS priority of different traffic classes. In this work, a resource management scheme for prioritizing closed subscriber group (CSG) members and QoS provisioning in LTE/LTE-A hybrid access femtocells is proposed. Firstly, an admission control problem and a packet scheduling problem, which account for different user priority and QoS of different traffic classes, are formulated. A lexicographic greedy algorithm and a delay-prioritized scheduling algorithm are proposed to solve the two problems respectively. Simulation results show that the proposed scheme achieves a substantial performance gain in terms of packet loss and fairness for real-time traffic flows, albeit at the cost of lower fairness for non-real-time traffic flows.
{"title":"A resource management scheme for hybrid access femtocells in LTE/LTE-A networks","authors":"Ying Loong Lee, J. Loo, T. Chuah","doi":"10.1109/PIMRC.2015.7343474","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343474","url":null,"abstract":"In Long Term Evolution (LTE)/LTE-Advanced (LTE-A) networks, hybrid access femtocells have been introduced as a tradeoff between closed and open access femtocells. However, quality of service (QoS) provisioning in hybrid access femtocells has become more challenging due to different user priority and traffic classes. Existing studies do not consider the LTE/LTE-A protocols and QoS priority of different traffic classes. In this work, a resource management scheme for prioritizing closed subscriber group (CSG) members and QoS provisioning in LTE/LTE-A hybrid access femtocells is proposed. Firstly, an admission control problem and a packet scheduling problem, which account for different user priority and QoS of different traffic classes, are formulated. A lexicographic greedy algorithm and a delay-prioritized scheduling algorithm are proposed to solve the two problems respectively. Simulation results show that the proposed scheme achieves a substantial performance gain in terms of packet loss and fairness for real-time traffic flows, albeit at the cost of lower fairness for non-real-time traffic flows.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117021625","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}
Ultra-dense network deployment is a clear trend considered for the next generation networks. To allow flexible deployment of small cells, self-backhauled small cell architecture is one of the important types of the future ultra-dense network architecture. In this paper, densification and virtualization are considered in both cell and user aspects. Virtualization of radio access network provides a key solution to mobility and interference issues. It enables user centric radio access. On the terminal side, more devices are expected to be connected in the network. Similarly, virtualization can be applied to the terminal side. This enables virtual resource allocation and coordination among terminals to boost up the user capability and overall network performance. This paper proposes a novel small cell architecture which considers multi-layer virtualization for dense heterogeneous network.
{"title":"Cell and user virtualization for ultra dense network","authors":"Yu-Ngok Ruyue Li, Peng Hao, Feng Xie, Huahua Xiao, Min Ren","doi":"10.1109/PIMRC.2015.7343693","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343693","url":null,"abstract":"Ultra-dense network deployment is a clear trend considered for the next generation networks. To allow flexible deployment of small cells, self-backhauled small cell architecture is one of the important types of the future ultra-dense network architecture. In this paper, densification and virtualization are considered in both cell and user aspects. Virtualization of radio access network provides a key solution to mobility and interference issues. It enables user centric radio access. On the terminal side, more devices are expected to be connected in the network. Similarly, virtualization can be applied to the terminal side. This enables virtual resource allocation and coordination among terminals to boost up the user capability and overall network performance. This paper proposes a novel small cell architecture which considers multi-layer virtualization for dense heterogeneous network.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115668322","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343632
Parisa Ramezani, Mohammadreza Pakravan
Wireless Sensor Networks (WSNs) have been weaved into the fabric of our daily lives. The foremost impediment in the rapid development of these networks is the energy limitation which inhibits them from meeting specific application requirements. Recently, the advances in energy harvesting technology have made it possible to replenish the energy of sensors via external sources. Energy Harvesting-Wireless Sensor Networks (EH-WSNs) are being transformed from a visionary concept into reality. However, this concept is still in its infancy and calls for extensive research to cater to the needs of WSNs. For future progress of EH-WSNs, Medium Access Control (MAC) layer has undoubtedly a decisive role to play. A well-designed MAC protocol can manage the channel access in such a way that the harvested energy is utilized efficiently and the performance is maximized. Due to the importance of medium access control in EH-WSNs, in this paper, we concentrate on the design aspects of MAC protocols for energy harvesting sensor networks. We introduce the characteristics of a properly-designed MAC protocol for EH-WSNs and provide a survey on MAC protocols which have been explicitly designed for energy harvesting sensor networks. We elaborate the advantages and disadvantages of each protocol, wishing to help future designers to learn from the merits and demerits of the existing ideas and propose a more robust solution which can be seamlessly integrated into WSNs.
{"title":"Overview of MAC protocols for energy harvesting wireless sensor networks","authors":"Parisa Ramezani, Mohammadreza Pakravan","doi":"10.1109/PIMRC.2015.7343632","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343632","url":null,"abstract":"Wireless Sensor Networks (WSNs) have been weaved into the fabric of our daily lives. The foremost impediment in the rapid development of these networks is the energy limitation which inhibits them from meeting specific application requirements. Recently, the advances in energy harvesting technology have made it possible to replenish the energy of sensors via external sources. Energy Harvesting-Wireless Sensor Networks (EH-WSNs) are being transformed from a visionary concept into reality. However, this concept is still in its infancy and calls for extensive research to cater to the needs of WSNs. For future progress of EH-WSNs, Medium Access Control (MAC) layer has undoubtedly a decisive role to play. A well-designed MAC protocol can manage the channel access in such a way that the harvested energy is utilized efficiently and the performance is maximized. Due to the importance of medium access control in EH-WSNs, in this paper, we concentrate on the design aspects of MAC protocols for energy harvesting sensor networks. We introduce the characteristics of a properly-designed MAC protocol for EH-WSNs and provide a survey on MAC protocols which have been explicitly designed for energy harvesting sensor networks. We elaborate the advantages and disadvantages of each protocol, wishing to help future designers to learn from the merits and demerits of the existing ideas and propose a more robust solution which can be seamlessly integrated into WSNs.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114319964","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 : 2015-12-03DOI: 10.1109/PIMRC.2015.7343616
Gang Deng, Xiaoming Xie, Li Shi, Rere Li
This paper investigates the issue of multi-hop forwarding in Vehicular Ad hoc Networks (VANETs), which is suffering from rapidly changing topology, short-lived and intermittent connectivity. Designed to replace TCP/IP using named data, Named Data Networking (NDN) has natural advantages to greatly overcome those challenges because of its multi-source and in-network caching characteristics. However, in the wireless environment the Interest and Data, proposed in NDN, are usually flooded because of the absence of Forwarding Information Base (FIB). To tackle this problem, we propose HVNDN, a hybrid forwarding strategy through NDN. More specifically, HVNDN introduces opportunistic and probabilistic forwarding strategy for location-dependent and location-independent information, respectively, which takes full advantage of geographic information and the characteristics of named data in VANETs. To make Vehicle-to-Vehicle (V2V) communication more effective and reliable, we design elaborate Interest and Data packets formats, retransmission and acknowledgement mechanism in HVNDN. Simulation results from NS-3 demonstrate that the proposed forwarding strategy outperforms the state-of-art scheme with less end-to-end delay and overhead.
本文研究了车载自组织网络(VANETs)中存在拓扑变化快、连接时间短、断断续续等问题的多跳转发问题。命名数据网络(NDN)旨在使用命名数据取代TCP/IP，由于其多源和网络内缓存特性，它具有极大地克服这些挑战的天然优势。然而，在无线环境下，由于没有转发信息库(Forwarding Information Base, FIB)， NDN中提出的兴趣和数据通常会泛滥。为了解决这个问题，我们提出了一种基于NDN的混合转发策略HVNDN。具体来说，HVNDN分别对位置依赖信息和位置无关信息引入了机会转发策略和概率转发策略，充分利用了地理信息和vanet中命名数据的特点。为了使车对车(V2V)通信更加有效和可靠，我们在HVNDN中设计了详细的兴趣和数据包格式、重传和确认机制。NS-3的仿真结果表明，所提出的转发策略具有更小的端到端延迟和开销，优于目前最先进的转发策略。
{"title":"Hybrid information forwarding in VANETs through named data networking","authors":"Gang Deng, Xiaoming Xie, Li Shi, Rere Li","doi":"10.1109/PIMRC.2015.7343616","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343616","url":null,"abstract":"This paper investigates the issue of multi-hop forwarding in Vehicular Ad hoc Networks (VANETs), which is suffering from rapidly changing topology, short-lived and intermittent connectivity. Designed to replace TCP/IP using named data, Named Data Networking (NDN) has natural advantages to greatly overcome those challenges because of its multi-source and in-network caching characteristics. However, in the wireless environment the Interest and Data, proposed in NDN, are usually flooded because of the absence of Forwarding Information Base (FIB). To tackle this problem, we propose HVNDN, a hybrid forwarding strategy through NDN. More specifically, HVNDN introduces opportunistic and probabilistic forwarding strategy for location-dependent and location-independent information, respectively, which takes full advantage of geographic information and the characteristics of named data in VANETs. To make Vehicle-to-Vehicle (V2V) communication more effective and reliable, we design elaborate Interest and Data packets formats, retransmission and acknowledgement mechanism in HVNDN. Simulation results from NS-3 demonstrate that the proposed forwarding strategy outperforms the state-of-art scheme with less end-to-end delay and overhead.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114324734","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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