Caching D2D Connections in Small-Cell Networks

Zhao, Nan; Liu, Xiaonan; Chen, Yunfei; Zhang, Shun; Li, Zan; Chen, Bingcai; Alouini, Mohamed‐Slim

doi:10.1109/tvt.2018.2877645

Cited by 53 publications

(24 citation statements)

References 44 publications

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“…In [35] Li et al propose a delay-aware algorithm for latency minimization in D2D assisted edge caching network. To address the drawbacks of the small-cell network, Zhao et al [36] offer a caching scheme and develop three-link scheduling schemes to maximize the throughput. To solve the problem of content transmission, Waqas et al [37] propose caching contents in a helper for content delivery using D2D communication.…”

Section: D2d Assisted Edge Cachingmentioning

confidence: 99%

Collaborative Cache Allocation and Transmission Scheduling for Multi-User in Edge Computing

Zhang

You

2020

IEEE Access

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Driven by the ubiquitous smart devices, wireless traffic data has increased significantly and brings a great burden on backhaul links. Edge caching and device-to-device are proved not only can overcome the above challenges, but also to reduce the energy consumption of devices. Meanwhile, the development of hardware makes it possible for terminal devices to cache popular content (referred to as "helpers"). In this paper, a device-to-device assisted edge caching network via helpers is designed to provide low-latency content access and alleviate the traffic load. Then, we formulate the problem of maximization of the successful delivery rate under the constraints of the Signal-to-Interference-plus-Noise Ratio and caching capacity as an integer programming and pose a novel efficient and effective scheme. Based on the algorithm, we first transform the problem into a tractable form. Then this paper presents a hybrid of heuristic approach and iterative selection method to limit the search scope. The simulations demonstrate the method can significantly reduce the system computation time. Moreover, the effects of different scenarios and parameter settings about the successful delivery rate of the Device-to-Device assisted edge caching networks are analyzed. INDEX TERMS Cover inequality; D2D-assisted edge caching network; edge caching networks; NP-hard; SINR

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Section: D2d Assisted Edge Cachingmentioning

confidence: 99%

Collaborative Cache Allocation and Transmission Scheduling for Multi-User in Edge Computing

Zhang

You

2020

IEEE Access

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“…The active D2D UE is assumed to work in the overlay D2D mode with FD transmission, not like that by Zhao et al That is, UE can transmit and receive files simultaneously. FD‐D2D communication can increase spectral efficiency significantly, but it also caused SI problem.…”

Section: System Modelmentioning

confidence: 99%

“…Cache-enabled D2D is a promising way to offload data traffic of cellular networks, which attracts considerable attention recently. [14][15][16][17][18][19][20][21] Zhao et al 14 proposed a caching D2D scheme for small-cell networks, in which caching placement and D2D establishment are combined. Long et al 15 conducted the joint cache policy and transmit power to maximize the content-related energy efficiency for the cache-enabled D2D network.…”

Section: Introductionmentioning

confidence: 99%

Joint caching policies for optimizing energy costs/offloading probability for D2D and millimeter‐wave small cell underlaying cache‐enabled networks

Zhao

Wang

et al. 2019

Trans Emerging Tel Tech

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Cache‐enabled networks are a promising solution to high video traffic, which allows popular files to cache at the user equipment (UE) and base stations (BSs). To improve the efficiency of file transmission, we adopt full‐duplex (FD) radio technology and millimeter‐wave small BSs (mmSBSs) in our network scenario. In this paper, users can get their required files via one of self‐communication, FD device‐to‐device (D2D) communication, mmSBS communication and macro BS (MBS) communication. Different communication modes have different energy costs. To minimize energy costs/maximize offloading probability, we analyze the successful probability for users to obtain files by different communication modes and propose an optimal joint caching policy for UE and mmSBSs. Based on the impact between UE and mmSBSs' caching policy, a suboptimal joint caching policy is proposed. The numerical results shown our optimal joint caching policy can improve the performance of cache‐enabled networks effectively and the suboptimal joint caching policy is more closer to the optimal caching policy than other common caching policies.

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“…Recently, to maximize the total offloading probability of D2D system and reduce the burden of BS, an optimal caching D2D scheme combining the video-file placement and delivery of caching D2D links is proposed for small-cell networks in [6]. The scheme is that closed-form solutoins are derived to solve the optimal caching problem according to the popularity of D2D system.…”

Section: Introductionmentioning

confidence: 99%

On Consideration of Content and Memory Sizes in 5G D2D-Assisted Caching Networks

Lin

Chen

et al. 2020

IEEE Access

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Device-to-Device (D2D) communication with caching technology has emerged as a promising technique for offloading the traffic and boosting the throughput of the fifth generation (5G) cellular networks. The combined impact of cache memory size of user equipments (UEs) and content sizes, which are two crucial factors in D2D-assisted caching networks, were usually ignored in the existing researches. In this paper, an optimization algorithm is proposed to maximize the cache hit probability and cache-aided throughput, with the consideration of various cache memory sizes of UEs and content sizes. Firstly, users are grouped according to the cache memory sizes and the content sizes. Then the general mathematical expressions for the optimization of cache hit probability and cache-aided throughput with the constraints of cache memory sizes and content sizes are obtained. Subsequently, a Packet Cache Strategy (PCS) algorithm is proposed to obtain the caching probability matrix with the maximum cache hit probability and cache-aided throughout by taking user caching probability of a file as a variable. Finally, numerical results show that the sizes of the requested files affect the caching willingness of users, and the proposed PCS can achieve the highest cache hit probability and the best cache-aided throughput comparing with two other existing methods. INDEX TERMS D2D-assisted caching, cache hit probability, cache-aid throughput, file size, memory size.

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Caching D2D Connections in Small-Cell Networks

Cited by 53 publications

References 44 publications

Collaborative Cache Allocation and Transmission Scheduling for Multi-User in Edge Computing

Collaborative Cache Allocation and Transmission Scheduling for Multi-User in Edge Computing

Joint caching policies for optimizing energy costs/offloading probability for D2D and millimeter‐wave small cell underlaying cache‐enabled networks

On Consideration of Content and Memory Sizes in 5G D2D-Assisted Caching Networks

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