AQM (Active Queue Management) mechanisms support an end-to-end congestion control mechanism of TCP (Transmission Control Protocol). Researchers have claimed several advantages of AQM mechanisms over a conventional Drop-Tail gateway such as the small average queue length (i.e., the number of packets in the buffer). Several AQM mechanisms have been recently proposed and studied by many researcher...

Dealingwith the quality of the packet transport ofmultimedia services in overlay networks, we present the relation between the packet missing probability Pm of transmitted packets of a variable bitrate video stream and distributions of the length of the overlay path, the upload capacity of nodes and the playback delay at a destination node. As active streams share the capacity of a transport ch...

In this paper, we consider a beyond-5G scenario, where two types of users, denoted as scheduled and uncoordinated nodes, coexist on the same set of radio resources for sending data to a base station. Scheduled nodes rely solely on a centralized scheduler within the base station for the assignment of resources, while uncoordinated nodes use an unslotted Carrier Sense Multiple Access (CSMA) proto...

In this paper DH-PIM modulation scheme and its properties are discussed. Expressions for, symbol length, transmission capacity, bandwidth requirements, photocurrent, power spectral density and slot and packet error rates are presented. Results obtained for the packet error rate are compared with OOK and PIM. It offers the same performance as PIM but considerably better performance compared with...

Fast Packet Switching (FPS) networks are designed to carry many kinds of traac, including voice, video, and data. In this paper, we evaluate one design parameter of FPS networks: whether the packets should be xed-length or variable-length. We consider three measures of performance: user frame loss rates, average latency, and eeective bandwidth.

The arrival of Enhanced Data Rate makes a Bluetooth home entertainment network more likely. However, if arriving IP packets do not account for the Bluetooth packet structure, poor performance will result. A dynamic IP packetization scheme is advocated and shown to overcome Bluetooth’s packet length dependencies. The research is relevant to converged IP networks which use Bluetooth as the wirele...

Efficient management of rather limited resources, including radio spectrum and mobile-terminal battery power, has been the fundamental design challenge of wireless networks and one of the most widespread research problems over the years. MAC (Medium Access Control) for packet access and CAC (Call Admission Control) for connection-oriented service domains are commonly used as effective tools to ...

The aim of this work is to improve the robustness of speech recognition systems operating in burst-like packet loss. First a set of highly artificial packet loss profiles are used to analyse their effect on both recognition performance and on the underlying feature vector stream. This indicates that the simple technique of vector repetition can make the recogniser robust to high percentages of ...

The aim of this work is to improve the robustness of speech recognition systems operating in burst-like packet loss. First a set of highly artificial packet loss profiles are used to analyse their effect on both recognition performance and on the underlying feature vector stream. This indicates that the simple technique of vector repetition can make the recogniser robust to high percentages of ...