Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/595589
Title: Analysis on Cache-Enabled Wireless Heterogeneous Networks
Authors: Chenchen Yang;Yao Yao;Zhiyong Chen;Bin Xia
subject: Pushing|Markov process|Content popularity|Caching|HetNets|Poisson Point Processes
Year: 2016
Publisher: IEEE
Abstract: Caching popular multimedia content is a promising way to unleash the ultimate potential of wireless networks. In this paper, we propose and analyze cache-based content delivery in a three-tier heterogeneous network (HetNet), where base stations (BSs), relays, and device-to-device (D2D) pairs are included. We advocate proactively caching popular content in the relays and parts of the users with caching ability when the network is off-peak. The cached content can be reused for frequent access to offload the cellular network traffic. The node locations are first modeled as mutually independent Poisson point processes (PPPs) and the corresponding content access protocol is developed. The average ergodic rate and outage probability in the downlink are then analyzed theoretically. We further derive the throughput and the delay based on the multiclass processor-sharing queue model and the continuous-time Markov process. According to the critical condition of the steady state in the HetNet, the maximum traffic load and the global throughput gain are investigated. Moreover, impacts of some key network characteristics, e.g., the heterogeneity of multimedia contents, node densities, and the limited caching capacities, on the system performance are elaborated on to provide valuable insight.
Description: 
URI: http://localhost/handle/Hannan/176334
http://localhost/handle/Hannan/595589
ISSN: 1536-1276
volume: 15
issue: 1
Appears in Collections:2016

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Title: Analysis on Cache-Enabled Wireless Heterogeneous Networks
Authors: Chenchen Yang;Yao Yao;Zhiyong Chen;Bin Xia
subject: Pushing|Markov process|Content popularity|Caching|HetNets|Poisson Point Processes
Year: 2016
Publisher: IEEE
Abstract: Caching popular multimedia content is a promising way to unleash the ultimate potential of wireless networks. In this paper, we propose and analyze cache-based content delivery in a three-tier heterogeneous network (HetNet), where base stations (BSs), relays, and device-to-device (D2D) pairs are included. We advocate proactively caching popular content in the relays and parts of the users with caching ability when the network is off-peak. The cached content can be reused for frequent access to offload the cellular network traffic. The node locations are first modeled as mutually independent Poisson point processes (PPPs) and the corresponding content access protocol is developed. The average ergodic rate and outage probability in the downlink are then analyzed theoretically. We further derive the throughput and the delay based on the multiclass processor-sharing queue model and the continuous-time Markov process. According to the critical condition of the steady state in the HetNet, the maximum traffic load and the global throughput gain are investigated. Moreover, impacts of some key network characteristics, e.g., the heterogeneity of multimedia contents, node densities, and the limited caching capacities, on the system performance are elaborated on to provide valuable insight.
Description: 
URI: http://localhost/handle/Hannan/176334
http://localhost/handle/Hannan/595589
ISSN: 1536-1276
volume: 15
issue: 1
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7194828.pdf1.96 MBAdobe PDFThumbnail
Preview File
Title: Analysis on Cache-Enabled Wireless Heterogeneous Networks
Authors: Chenchen Yang;Yao Yao;Zhiyong Chen;Bin Xia
subject: Pushing|Markov process|Content popularity|Caching|HetNets|Poisson Point Processes
Year: 2016
Publisher: IEEE
Abstract: Caching popular multimedia content is a promising way to unleash the ultimate potential of wireless networks. In this paper, we propose and analyze cache-based content delivery in a three-tier heterogeneous network (HetNet), where base stations (BSs), relays, and device-to-device (D2D) pairs are included. We advocate proactively caching popular content in the relays and parts of the users with caching ability when the network is off-peak. The cached content can be reused for frequent access to offload the cellular network traffic. The node locations are first modeled as mutually independent Poisson point processes (PPPs) and the corresponding content access protocol is developed. The average ergodic rate and outage probability in the downlink are then analyzed theoretically. We further derive the throughput and the delay based on the multiclass processor-sharing queue model and the continuous-time Markov process. According to the critical condition of the steady state in the HetNet, the maximum traffic load and the global throughput gain are investigated. Moreover, impacts of some key network characteristics, e.g., the heterogeneity of multimedia contents, node densities, and the limited caching capacities, on the system performance are elaborated on to provide valuable insight.
Description: 
URI: http://localhost/handle/Hannan/176334
http://localhost/handle/Hannan/595589
ISSN: 1536-1276
volume: 15
issue: 1
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7194828.pdf1.96 MBAdobe PDFThumbnail
Preview File