Sökning: "MAC wlan"

Visar resultat 1 - 5 av 21 uppsatser innehållade orden MAC wlan.

  1. 1. Energy-efficient enhancements for IEEE 802.11 WLANs : On the way to enable Cellular/Wi-Fi networks interworking

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Fernando Valdenebro González; [2014]
    Nyckelord :energy-efficiency; WLAN; Wi-Fi; heterogeneous networks; seamless handover; network discovery; energieffektivitet; WLAN; Wi-Fi; avbrottsfri handover; nätverksidentifiering; heterogena nätverk;

    Sammanfattning : Globally, the number of mobile broadband subscriptions is growing and the amount of mobile data traffic is expected to continue to grow rapidly. In the next five years the number of smartphone subscriptions is expected to more than double, while the amount of mobile traffic per active subscription per month of these subscribers is expected to nearly quadruple. LÄS MER

  3. 2. Study of TCP Available Bandwidth Using NS2 and Its Forecasting Based on Genetic Algorithm

    Master-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap

    Författare :Francisco Domingo Sanchez Vizcaino; Cristian Hernandez Benet; [2014]
    Nyckelord :;

    Sammanfattning : On the one hand, the available bandwidth in a bandwidth-limited medium as the wireless medium is a highly demanded topic of study. On the other hand, the Transport Control Protocol (TCP) is one of the most used transport protocols on the Internet. LÄS MER

  4. 3. Media Access Control for Wireless Sensor and Actuator Networks

    Master-uppsats, Kommunikationssystem; Tekniska högskolan

    Författare :Muaz Un Nabi; [2012]
    Nyckelord :NS-2; WSN; IWLAN; DCF; PCF;

    Sammanfattning : In a wireless network, the medium is a shared resource. The nodes in the network negotiate access of the shared resource using the Medium Access Control (MAC) protocol. The design of a MAC protocol for a sensor node is not the same as that for a wireless transceiver. LÄS MER

  5. 4. Cognitive WSN access based on local WLAN traffic estimation

    Master-uppsats, KTH/Kommunikationsnät

    Författare :Marcello Lagana; [2011]
    Nyckelord :;

    Sammanfattning : The recent growth in the deployment of wireless networks that access the unlicensed ISM bands has introduced the issue of co-existence between different kinds of wireless technologies. In this work we address the enhancement of the performance of the low-cost Wireless Sensor Network nodes competing for spectrum access with the WLAN devices, that are more powerful in terms of transmission and computational power. LÄS MER

  7. 5. Spectrum Sensing and Management in Cooperative Cognitive Radio

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Ghayoor Abbas Jafri; Ateeq Ur Rehman; Muhammad Tariq Sadiq; [2011]
    Nyckelord :Cognitive radio networks; Cooperative communication; Dynamic spectrum sharing; Cross layer design ; OC-MAC Protocol ; Opportunistic spectrum access; Spectrum sensing; Spectrum management;

    Sammanfattning : In the last few years, there has been enormous improvement in mobile communication services. Due to this rapid growth in the field of communications, the demand for wireless spectrum has increased rapidly. In the early days in order to remove the interference problem, the spectrum was assigned statically. LÄS MER