Lluís Gutierrez

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— Ethernet-based Passive Optical Networks (EPON) are being considered as the best candidates for the next generation broadband access networks. Several algorithms for dynamic bandwidth allocation in EPON have been proposed, as this is an open issue that was left out of the scope of the standard IEEE 802.3ah. Very few of those works address the possibilities(More)
may communicate in a multihop fashion, forming mesh networks. To maintain cost and resource efficiency, we propose the introduction of Quality of Service (QoS) proxies at the border between different link technologies. These entities handle QoS requirements and aid to the support of mobility. The architecture requires no modification of the Medium Access(More)
The access network infrastructure plays an important role in the overall performance of the network, next generation access networks (NGA) must be able to access diverse services, and should incorporate adequate architectures that include mechanisms for the integration of different technologies. New optical access technologies trends are: WDM, 10 Gb/s, and(More)
and manage network and communications infrastructure in an organization. 4. CETI6. Ability to design systems, applications and services based on network technologies, including internet, website, e-commerce, multimedia, interactive services and mobile computing. 5. CETI7. Ability to understand, implement and manage security and safety of computing systems.(More)
Random Multi-access Protocols has been used as the MAC protocol over Multi-access channels. They are specially recommended when there are a large population of users with low and bursty traffic as for example it will be in HFC (Hybrid Fiber-Coax) networks with multimedia services, we should be sure that the access to the network copes with the QoS. each(More)
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