HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Optimal Relay Placement in Cellular Networks

Abstract : In this paper, we address the problem of optimally placing relay nodes in a cellular network with the aim of maximizing cell capacity. In order to accurately model interference, we use a dynamic framework, in which users arrive at random time instants and locations, download a file and leave the system. A fixed point equation is solved to account for the interactions between stations. We also propose an extension of a fluid model to relay based cellular networks. This allows us to obtain quick approximations of the Signal to Interference plus Noise Ratio (SINR) that are very close to 3GPP LTE-A guideline results in terms of SINR distribution.We then use these formulas to develop a dedicated Simulated Annealing (SA) algorithm, which adapts dynamically the temperature to energy variations and uses a combination of coarse and fine grids to accelerate the search for an optimized solution. Simulations results are provided for both in-band and out-of-band relays. They show how relays should be placed in a cell in order to increase the capacity in case of uniform and non-uniform traffic. The crucial impact of the backhaul link is analyzed for in-band relays. Insights are given on the influence of shadowing.
Document type :
Journal articles
Complete list of metadata

Cited literature [42 references]  Display  Hide  Download

Contributor : Admin Télécom Paristech Connect in order to contact the contributor
Submitted on : Thursday, March 13, 2014 - 1:09:31 PM
Last modification on : Tuesday, October 19, 2021 - 11:16:02 AM
Long-term archiving on: : Friday, June 13, 2014 - 11:05:25 AM


Files produced by the author(s)




Mattia Minelli, Maode Ma, Marceau Coupechoux, Jean-Marc Kélif, Marc Sigelle, et al.. Optimal Relay Placement in Cellular Networks. IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, 2014, 13 (2), pp.998-1009. ⟨10.1109/TWC.2013.010214.130814⟩. ⟨hal-00958679⟩



Record views


Files downloads