Results 1 -
3 of
3
Error-Resilient Packet Header Compression
"... Abstract—Full packet headers consume valuable bitrate, which is especially costly in satellite links and some terrestrial wireless links. This has motivated the compression of packet headers by exploiting their correlation via using finite-state machines. The drawback is that compression in the pres ..."
Abstract
- Add to MetaCart
(Show Context)
Abstract—Full packet headers consume valuable bitrate, which is especially costly in satellite links and some terrestrial wireless links. This has motivated the compression of packet headers by exploiting their correlation via using finite-state machines. The drawback is that compression in the presence of channel errors (packet loss) may result in error propagation. We offer several designs by adapting error control codes for the requirements of packet header compression in uni-directional and bi-directional links, and explore the tradeoffs in complexity, delay, and system performance. For the bi-directional link, we propose a new design called predictive hybrid ARQ and evaluate its performance. Experiments show significant gains in link-layer throughput as well as improved application layer performance demonstrated via video transfer experiments. Index Terms—Header compression, ROHC, error resilience. I.
unknown title
"... pro essalo Responsible Editor: K. Kant Keywords: rgeo se to IP (VoIP) is the most prominent one. Beginning more as a frolic among computer enthusi-all these aspects that have the greatest impact on the quality of voice communications over a wo for voice communications. Beginning as a frolic among co ..."
Abstract
- Add to MetaCart
(Show Context)
pro essalo Responsible Editor: K. Kant Keywords: rgeo se to IP (VoIP) is the most prominent one. Beginning more as a frolic among computer enthusi-all these aspects that have the greatest impact on the quality of voice communications over a wo for voice communications. Beginning as a frolic among computer enthusiasts, VoIP has set off a feeding frenzy in both the industrial and scientific communities. Since its inception, huge strides have been made and now VoIP en-saved on the monthly phone service considering that IP telephony service is less expensive than the traditional phone service. In addition, VoIP offers service flexibility since there are no dependencies between the application and the underlying network. VoIP users can already enjoy a variety of features, which they previously had to pay for, for free. Some of these features are voicemail, caller ID, call conferencing, call waiting and call forwarding. This
1 Error-Resilient Packet Header Compression
"... Network traffic statistics show that, because shorter packets predominate in many applications, headers impose a considerable overhead. But the header content is largely repetitive, thus in the past 15 years many packet header compression techniques have been proposed and studied. Header compression ..."
Abstract
- Add to MetaCart
(Show Context)
Network traffic statistics show that, because shorter packets predominate in many applications, headers impose a considerable overhead. But the header content is largely repetitive, thus in the past 15 years many packet header compression techniques have been proposed and studied. Header compression is based on differential methods, which introduces error propagation and leads to problems, e.g., in wireless links. This work presents error-resilient header compression by using forward error correction (FEC), which can significantly improve the throughput of header compression in both uni-directional and bi-directional links. The proposed methods are versatile and can work with pre-existing header compression schemes. Simulations demonstrate the advantages of the proposed system in terms of packet loss rates, throughput and delay.
