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Device-to-Device Communications in Cellular NetworksProximity Discovery for Cellular D2D Underlay

Device-to-Device Communications in Cellular Networks: Proximity Discovery for Cellular D2D Underlay [In D2D enabled networks, direct radio links are allowed between cellular users for data transportation. One of the first steps in setting up D2D links involves pairing UEs that are in close proximity [1]. This is accomplished during neighbor discovery process, where UEs will identify their neighbors for potential direct-link setup. To facilitate the deployment of D2D functionality to standard LTE cellular systems, it is necessary to explore neighbor discovery opportunities in existing LTE infrastructure. In this chapter, we will introduce neighbor discovery techniques for D2D communications of LTE UEs in a modern cellular network [2, 3]. By listening to cellular uplink transmissions, UEs can detect potential D2D partners through a neighbor discovery process compatible with the standard LTE network protocol. We focus on neighbor discovery utilizing the SRS channel, which can be accessed by peer UEs that are LTE-compliant. Under the constraint of unknown channel statistics during uplink hearing, we propose joint neighbor detection and D2D channel estimation for listening UEs using the framework of sparse channel recovery [4–7].] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Device-to-Device Communications in Cellular NetworksProximity Discovery for Cellular D2D Underlay

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Publisher
Springer International Publishing
Copyright
© The Author(s) 2016
ISBN
978-3-319-30679-7
Pages
25 –39
DOI
10.1007/978-3-319-30681-0_3
Publisher site
See Chapter on Publisher Site

Abstract

[In D2D enabled networks, direct radio links are allowed between cellular users for data transportation. One of the first steps in setting up D2D links involves pairing UEs that are in close proximity [1]. This is accomplished during neighbor discovery process, where UEs will identify their neighbors for potential direct-link setup. To facilitate the deployment of D2D functionality to standard LTE cellular systems, it is necessary to explore neighbor discovery opportunities in existing LTE infrastructure. In this chapter, we will introduce neighbor discovery techniques for D2D communications of LTE UEs in a modern cellular network [2, 3]. By listening to cellular uplink transmissions, UEs can detect potential D2D partners through a neighbor discovery process compatible with the standard LTE network protocol. We focus on neighbor discovery utilizing the SRS channel, which can be accessed by peer UEs that are LTE-compliant. Under the constraint of unknown channel statistics during uplink hearing, we propose joint neighbor detection and D2D channel estimation for listening UEs using the framework of sparse channel recovery [4–7].]

Published: Apr 30, 2016

Keywords: Discrete Fourier Transform; Cyclic Prefix; OFDM Symbol; Neighbor Discovery; Inverse Discrete Fourier Transform

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