Now showing items 1-7 of 7

    • A 4-Dimensional Markov model for the evaluation of radio access technology selection strategies in multiservice scenarios 

      Gelabert Doran, Xavier Bernardi; Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (IEEE Press. Institute of Electrical and Electronics Engineers, 2006)
      Conference report
      Open Access
      In order to support the conceptual development of Common Radio Resource Management (CRRM) algorithms, this paper provides an analytical approach to the performance evaluation of Radio Access Technology (RAT) selection ...
    • Congestion control strategies in multi-access networks 

      Gelabert Doran, Xavier Bernardi; Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (2006)
      Conference lecture
      Open Access
      This paper addresses the problematic of congestion control in the radio access interface when considering the allocation of voice and data services over several Radio Access Technologies (RATs). In particular, the GSMIEDGE ...
    • Erlang capacity degradation in multi-access/multi-service wireless networks due to terminal/coverage restrictions 

      Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2008)
      Conference report
      Restricted access - publisher's policy
      The benefits of jointly managing the combined radio resources offered by heterogeneous networks consisting of several Radio Access Technologies (RATs) have been profusely studied and assessed in recent years. Nevertheless, ...
    • Exploiting the operating point in sensing-based opportunistic spectrum access scenarios 

      Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2009)
      Conference lecture
      Open Access
      Spectrum sensing is one key enabler towards opportunistic spectrum access in cognitive radio networks. Such scenarios allow cognitive users (a.k.a. secondary users) to access some licensed spectrum band as long as they do ...
    • On the impact of multimode terminals in heterogeneous wireless access networks 

      Gelabert Doran, Xavier Bernardi; Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (IEEE, 2005)
      Conference report
      Open Access
      Beyond 3G (B3G) networks will encompass, among other features, a wide range of radio access technologies (RATs) providing users with a flexible and efficient access to the increasing pool of demanding services. This will ...
    • Performance evaluation of radio access selection strategies in constrained multi-access/multi-service wireless networks 

      Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2011-01-07)
      Article
      Restricted access - publisher's policy
      The benefits of jointly managing the combined set of radio resources offered by heterogeneous networks consisting of several radio access technologies (RATs) have been profusely studied and assessed in recent years. This ...
    • Spectrum sharing in cognitive radio networks with imperfect sensing: a discrete-time Markov model 

      Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Agustí Comes, Ramon; Pérez Romero, Jordi (2010-10)
      Article
      Restricted access - publisher's policy
      An efficient and utmost utilization of currently scarce and underutilized radio spectrum resources has stimulated the introduction of what has been coined Cognitive Radio (CR) access methodologies and implementations. While ...