Single or Multiple Frames Content Delivery for Next-Generation Networks?
This paper addresses the four enabling technologies, namely multi-user sparse code multiple access (SCMA), content caching, energy harvesting, and physical layer security for proposing an energy and spectral efficient resource allocation algorithm for the access and backhaul links in heterogeneous c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8877830/ |
| _version_ | 1818877620707655680 |
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| author | Mohammadreza Abedi Nader Mokari Mohammad Reza Javan Eduard A. Jorswieck |
| author_facet | Mohammadreza Abedi Nader Mokari Mohammad Reza Javan Eduard A. Jorswieck |
| author_sort | Mohammadreza Abedi |
| collection | DOAJ |
| description | This paper addresses the four enabling technologies, namely multi-user sparse code multiple access (SCMA), content caching, energy harvesting, and physical layer security for proposing an energy and spectral efficient resource allocation algorithm for the access and backhaul links in heterogeneous cellular networks. Although each of the above mentioned issues could be a topic of research, in a real situation, we would face a complicated scenario where they should be considered jointly, and hence, our target is to consider these technologies jointly in a unified framework. Moreover, we propose two novel content delivery scenarios: 1) single frame content delivery (SFCD), and 2) multiple frames content delivery (MFCD), where the time duration of serving user requests is divided into several frames. In the first scenario, the requested content by each user is served over one frame. However, in the second scenario, the requested content by each user can be delivered over several frames. We formulate the resource allocation for the proposed scenarios as optimization problems where our main aim is to maximize the energy efficiency of access links subject to the transmit power and rate constraints of access and backhaul links, caching and energy harvesting constraints, and SCMA codebook allocation limitations. Due to the practical limitations, we assume that the channel state information values between eavesdroppers and base stations are uncertain and design the network for the worst case scenario. Since the corresponding optimization problems are mixed integer non-linear and nonconvex programming, NP-hard, and intractable, we propose an iterative algorithm based on the well-known alternate and successive convex approximation methods. In addition, the proposed algorithms are studied from the computational complexity, convergence, and performance perspectives. Moreover, the proposed caching scheme outperforms the existing traditional caching schemes like random caching and most popular caching. We also study the effect of joint and disjoint considerations of enabling technologies for the performance of next-generation networks. On the one hand, our proposed caching strategy increases slightly the computational complexity by 3%, 1.1%, and 2% compared to no caching, SFCD, and disjoint solution, respectively. On the other hand, the proposed caching scheme achieves a performance gain of 43%, 9.4%, and 51.3% compared to the three state-of-the-art schemes. |
| first_indexed | 2024-12-19T14:01:11Z |
| format | Article |
| id | doaj.art-abb25399a070476f8b8a9a623867931c |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T14:01:11Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-abb25399a070476f8b8a9a623867931c2022-12-21T20:18:27ZengIEEEIEEE Access2169-35362019-01-01715250115252110.1109/ACCESS.2019.29483898877830Single or Multiple Frames Content Delivery for Next-Generation Networks?Mohammadreza Abedi0Nader Mokari1https://orcid.org/0000-0001-5364-8888Mohammad Reza Javan2Eduard A. Jorswieck3Department of Systems and Computer Engineering, Tarbiat Modares University, Tehran, IranDepartment of Systems and Computer Engineering, Tarbiat Modares University, Tehran, IranDepartment of Electrical and Robotics Engineering, Shahrood University of Technology, Shahrood, IranDepartment of Information Theory and Communication Systems, TU Braunschweig, Braunschweig, GermanyThis paper addresses the four enabling technologies, namely multi-user sparse code multiple access (SCMA), content caching, energy harvesting, and physical layer security for proposing an energy and spectral efficient resource allocation algorithm for the access and backhaul links in heterogeneous cellular networks. Although each of the above mentioned issues could be a topic of research, in a real situation, we would face a complicated scenario where they should be considered jointly, and hence, our target is to consider these technologies jointly in a unified framework. Moreover, we propose two novel content delivery scenarios: 1) single frame content delivery (SFCD), and 2) multiple frames content delivery (MFCD), where the time duration of serving user requests is divided into several frames. In the first scenario, the requested content by each user is served over one frame. However, in the second scenario, the requested content by each user can be delivered over several frames. We formulate the resource allocation for the proposed scenarios as optimization problems where our main aim is to maximize the energy efficiency of access links subject to the transmit power and rate constraints of access and backhaul links, caching and energy harvesting constraints, and SCMA codebook allocation limitations. Due to the practical limitations, we assume that the channel state information values between eavesdroppers and base stations are uncertain and design the network for the worst case scenario. Since the corresponding optimization problems are mixed integer non-linear and nonconvex programming, NP-hard, and intractable, we propose an iterative algorithm based on the well-known alternate and successive convex approximation methods. In addition, the proposed algorithms are studied from the computational complexity, convergence, and performance perspectives. Moreover, the proposed caching scheme outperforms the existing traditional caching schemes like random caching and most popular caching. We also study the effect of joint and disjoint considerations of enabling technologies for the performance of next-generation networks. On the one hand, our proposed caching strategy increases slightly the computational complexity by 3%, 1.1%, and 2% compared to no caching, SFCD, and disjoint solution, respectively. On the other hand, the proposed caching scheme achieves a performance gain of 43%, 9.4%, and 51.3% compared to the three state-of-the-art schemes.https://ieeexplore.ieee.org/document/8877830/Heterogenous cellular networkscontent cachingphysical layer securityenergy harvestingimperfect CSI |
| spellingShingle | Mohammadreza Abedi Nader Mokari Mohammad Reza Javan Eduard A. Jorswieck Single or Multiple Frames Content Delivery for Next-Generation Networks? IEEE Access Heterogenous cellular networks content caching physical layer security energy harvesting imperfect CSI |
| title | Single or Multiple Frames Content Delivery for Next-Generation Networks? |
| title_full | Single or Multiple Frames Content Delivery for Next-Generation Networks? |
| title_fullStr | Single or Multiple Frames Content Delivery for Next-Generation Networks? |
| title_full_unstemmed | Single or Multiple Frames Content Delivery for Next-Generation Networks? |
| title_short | Single or Multiple Frames Content Delivery for Next-Generation Networks? |
| title_sort | single or multiple frames content delivery for next generation networks |
| topic | Heterogenous cellular networks content caching physical layer security energy harvesting imperfect CSI |
| url | https://ieeexplore.ieee.org/document/8877830/ |
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