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Browsing by Subject "Access points"

Now showing items 1-8 of 8

    • Competition and cooperation in wireless access misbehavior 

      Koutsopoulos, I. (2011)
      With the proliferation of access points and terminals, wireless access misbehavior emerges as important means of protocol misuse, whereby network entities aim at obtaining higher channel share than the one in legitimate ...

    • Contention and traffic load-aware association in IEEE 802.11 WLANs: Algorithms and implementation 

      Keranidis, S.; Korakis, T.; Koutsopoulos, I.; Tassiulas, L. (2011)
      Efficient association of a station with the appropriate access point has always been a challenging problem. The standard approach of considering only the Received Signal Strength, has recently been substituted by more ...

    • Cooperative handoff in wireless networks 

      Athanasiou, G.; Korakis, T.; Tassiulas, L. (2008)
      In 802.11-based wireless networks the stations (STAs) are associated with the available access points (APs) and communicate through them. In traditional handoff schemes the STAs get information about the active APs in their ...

    • FIJI: Fighting implicit jamming in 802.11 WLANs 

      Broustis, I.; Pelechrinis, K.; Syrivelis, D.; Krishnamurthy, S. V.; Tassiulas, L. (2009)
      The IEEE 802.11 protocol inherently provides the same long-term throughput to all the clients associated with a given access point (AP). In this paper, we first identify a clever, low-power jamming attack that can take ...

    • Interference mitigation in co-working IEEE 802.11n WLANs 

      Papathanasiou, C.; Koutsopoulos, I.; Tassiulas, L. (2009)
      In a densely deployed Wireless Local Area Network (WLAN) environment, Access Points (APs) could be so close to cause significant channel interference. In the next generation IEEE 802.11n WLANs, inter-cell interference ...

    • Joint beamforming and channel selection for multicast IEEE 802.11n WLANs 

      Papathanasiou, C.; Tassiulas, L. (2008)
      Multicast transmission over WLANs is becoming a popular application. IEEE 802.11n technology is developed due to the ever increasing demand for higher data rate and Quality of Service (QoS). However, there is an unmanaged ...

    • Low-complexity beamforming techniques for IEEE 802.11n WLANs 

      Papathanasiou, C.; Koutsopoulos, I.; Tassiulas, L. (2009)
      The impetus of the present study is to describe a downlink beamforming method that increase spectrum efficiency and significantly reduces implementation complexity and power consumption compare to beamforming technique at ...

    • Queue and channel state awareness for maximum throughput access control in CSMA/CA-based wireless LANs 

      Oliveira, R.; Koutsopoulos, I. (2009)
      This paper introduces two important enhancements to the IEEE 802.11 medium access control (MAC) protocols which are not considered in the current IEEE 802.11 MAC protocol: the channel state between the transmitter and the ...