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Buffer-aided D2D communications: opportunities and challenges

Buffer-aided D2D communications: opportunities and challenges
Buffer-aided D2D communications: opportunities and challenges
To meet the increasing demands for popular content downloading services in next-generation cellular networks, device-to-device (D2D) communication was proposed to enable user equipments (UEs) to communicate directly over the D2D links in addition to traditional cellular operation by base stations (BSs), which is capable of utilizing the available cellular network’s resource more efficiently to enhance content downloading performance. Although buffer-aided protocols may provide significant throughput gains in wireless networks, the opportunities and challenges of buffer-aided D2D communications are not yet fully understood. Differing from most existing works that focus on investigating buffering policy, we analyze the fundamental impact of the constrained buffers on the D2D communication underlaying cellular system by an optimization framework. Our study quantitatively reveals the positive correlation between the buffer sizes of BSs and UEs and the overall system performance, as well as further revealing the opportunities created by buffer-aided D2D communications for bandwidth conservation. In addition, we discuss practical challenges inherent in buffer-limited D2D communication underlaying next generation cellular networks, including increased transmission delay and optimal bandwidth allocation.
67-74
Zhang, Haoming
d3fa5a74-8fcf-43e6-ba18-1d7155ed451f
Li, Yong
0817e950-114f-47f3-aefe-74bf9ec0e2a3
Jin, Depeng
d5ef5d7e-82a7-4950-85cf-800fe7794cc5
Hassan, Mohammad M.
5b006a79-f2d6-4290-8a97-f9726cf2b387
Alelaiwi, Abdulhameed
dbe957ee-fa85-4d2d-995e-0b5e2ed07156
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Zhang, Haoming
d3fa5a74-8fcf-43e6-ba18-1d7155ed451f
Li, Yong
0817e950-114f-47f3-aefe-74bf9ec0e2a3
Jin, Depeng
d5ef5d7e-82a7-4950-85cf-800fe7794cc5
Hassan, Mohammad M.
5b006a79-f2d6-4290-8a97-f9726cf2b387
Alelaiwi, Abdulhameed
dbe957ee-fa85-4d2d-995e-0b5e2ed07156
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80

Zhang, Haoming, Li, Yong, Jin, Depeng, Hassan, Mohammad M., Alelaiwi, Abdulhameed and Chen, Sheng (2015) Buffer-aided D2D communications: opportunities and challenges. IEEE Communications Magazine, 53 (12), 67-74.

Record type: Article

Abstract

To meet the increasing demands for popular content downloading services in next-generation cellular networks, device-to-device (D2D) communication was proposed to enable user equipments (UEs) to communicate directly over the D2D links in addition to traditional cellular operation by base stations (BSs), which is capable of utilizing the available cellular network’s resource more efficiently to enhance content downloading performance. Although buffer-aided protocols may provide significant throughput gains in wireless networks, the opportunities and challenges of buffer-aided D2D communications are not yet fully understood. Differing from most existing works that focus on investigating buffering policy, we analyze the fundamental impact of the constrained buffers on the D2D communication underlaying cellular system by an optimization framework. Our study quantitatively reveals the positive correlation between the buffer sizes of BSs and UEs and the overall system performance, as well as further revealing the opportunities created by buffer-aided D2D communications for bandwidth conservation. In addition, we discuss practical challenges inherent in buffer-limited D2D communication underlaying next generation cellular networks, including increased transmission delay and optimal bandwidth allocation.

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Published date: December 2015
Organisations: Southampton Wireless Group

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Local EPrints ID: 385432
URI: https://eprints.soton.ac.uk/id/eprint/385432
PURE UUID: f2f54997-5a46-4fce-8631-7171f0a7c759

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Date deposited: 19 Jan 2016 12:11
Last modified: 13 Dec 2018 12:29

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