Recent Submissions

  • Massive access in the random access channel of LTE for M2M communications: an energy perspective 

    Laya, Andrés; Alonso-Zárate, Jesús; Alonso Zárate, Luis Gonzaga; Chatzimisios, Periklis (2015)
    Conference report
    Restricted access - publisher's policy
    The capacity limits of the Random Access Channel (RACH) of Long Term Evolution (LTE) for highly dense Machineto-Machine communications are studied in this paper. We consider the case study when a high number of devices ...
  • Reservation dynamic frame slotted-ALOHA for wireless M2M networks with energy harvesting 

    Vázquez-Gallego, Francisco; Alonso-Zárate, Jesús; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    We consider a wireless Machine-to-Machine (M2M) area network where a gateway periodically collects data from a group of end-devices equipped with energy harvesters. While the use of energy harvesters ideally provides ...
  • Combating selfish misbehavior with reputation based uplink offloading for IP flow mobility 

    Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2015)
    Conference report
    Restricted access - publisher's policy
    In this paper we focus on the uplink offloading based on IP Flow Mobility (IFOM). With IFOM a User Equipment (UE) is able to maintain concurrently two data streams, one through LTE and the other through WiFi. We propose a ...
  • On the mobility of moderate speed users in ultra dense small cell deployments with mmW 

    Joud, Mohammad; García Lozano, Mario; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference lecture
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    This paper deals with mobility robustness in a context of ultra-dense deployments operating at the millimeter wave (mmW) band. In order to increase the threshold speed of user equipments (UEs) allowed at the small cell ...
  • On the feasibility of Bluetooth, Zigbee and IEEE 802.15.4 technologies on board high speed trains 

    Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (2011)
    Conference report
    Open Access
    This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional land-to-train communication. The presented ...
  • Measurement-based LoS/NLoS channel modeling for hot-spot urban scenarios in UMTS networks 

    Chen, Jiajing; Yin, Xuefeng; Tian, Li; Zhang, Nan; He, Yonguy; Cheng, Xiang; Duan, Weiming; Ruiz Boqué, Sílvia (2014)
    Conference report
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    In this contribution, a measurement campaign is introduced for modeling radio channels with either Line-of-Sight (LoS) or Non-Line-of-Sight (NLoS) connection between a user equipment (UE) and a NodeB (NB) in an operating ...
  • Efficient cognitive radio networks with cooperative beamforming 

    Ling, Cen; Ruiz Boqué, Sílvia; Yin, Xuefeng; García Lozano, Mario (2014)
    Conference report
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    Cooperative communication with spectrum sharing has been proved to be an efficient way to reduce energy consumption. In this work an optimal power allocation algorithm is proposed for mobile cooeprative beamforming networks, ...
  • A traffic aware energy saving scheme for multicarrier HSPA+ 

    Jada, Maliha Urooj; García Lozano, Mario; Hämäläinen, Jyri (Springer, 2014)
    Conference report
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    In the near future, an increase in cellular network density is expected to be one of the main enablers for the newly introduced challenging capacity goals. This development will lead to an increase in the network energy ...
  • An energy efficient protocol architecture for m-Health systems 

    Tennina, Stefano; Kartsakli, Elli; Graziosi, Fabio; Santos, Manuel; Lalos, Aristeidis; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
    Conference report
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    Contemporary technologies as implemented in the field of health care have provided the everyday clinical practice with a plethora of tools to be used in various settings. However, from all established and emerging applications, ...
  • End-to-end communication challenges in M2M systems for mHealth applications 

    Kartsakli, Elli; Lalos, Aristeidis; Antonopoulos, Angelos; Tennina, Stefano; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In the new era of connectivity, marked by the explosive number of wireless electronic devices and the need for smart and pervasive applications, Machine-to-Machine (M2M) communications are an emerging technology that enables ...

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