Packet-Level Link Capacity Evaluation for IP Networks

Avoiding Useless Packet Transmission for Multimedia over IP Networks: The Case of Single Congested Link

When packet loss rate exceeds a given threshold, received audio and video become unintelligible. A congested router transmitting multimedia packets, while inflicting a packet loss rate beyond a given threshold, effectively transmits useless packets. Useless packet transmission wastes router bandwidth when it is needed most. We propose an algorithm to avoid transmission of useless multimedia pac...

Capacity Increase for Voice over IP Traffic through Packet Aggregation in Wireless Mesh Networks

Recently, Voice over IP (VoIP) has become an important service for the future internet. However, for ubiquitous wireless VoIP services, greater coverage will be necessary as promised by the advent of e.g. 802.11 WLAN based wireless meshed networks. Unfortunately, the transmission of small (voice) packets imposes high overhead which leads to low capacity for VoIP over 802.11 based multihop meshe...

Routing and Capacity Optimization for IP Networks

Combined methodology for measurement of available bandwidth and link capacity in wired packet networks

Accurate measurement of network parameters such as available bandwidth, link capacity, delay, packet loss and jitter are used to support and monitor several network functions, e.g., traffic engineering, Quality-of-Service (QoS) routing, end-to-end transport performance optimization, and link capacity planning. However, proactive network measurement schemes can impact both the data traffic and t...

Packet concatenation at the IP level for performance enhancement in wireless local area networks

Wireless local area networks experience performance degradation in presence of small packets. The main reason for that is the large overhead added at the physical and link layers. This paper proposes a concatenation algorithm which groups IP layer packets prior to transmission, called PAC-IP. As a result, the overhead added at the physical and the link layers is shared among the grouped packets...