CRTP over cellular radio links
draft-degermark-crtp-cellular-01
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Authors | Hans Hannu , Lars-Erik Jonsson , Krister Svanbro | ||
| Last updated | 1999-12-14 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
This document evaluates the performance of a header compression protocol for RTP, CRTP [RFC-2509], over links built on cellular radio access technology. The key characteristics affecting CRTP performance over such links are the high error rates and the relatively long roundtrip time over the link. Bandwidth is typically expensive in cellular radio access networks, saving a single octet per voice packet can be equivalent to saving many billion dollars in deployment since fewer base-stations are needed. This is beneficial for operators as well as end-users who can get cheaper wireless IP telephony service. CRTP performance is evaluated for two kinds of link layers operating over a realistic radio channel with high bit-error rates. Two main conclusions are drawn. The first is that CRTP does not perform well for this type of link. The second is that in high-error environments it is very beneficial to have a checksum covering the compressed header only, not the payload, so that the decompressor sees all non- damaged headers. When a strong checksum covers the entire link layer frame, header compression performs badly since too many headers are discarded due to damaged payloads.
Authors
Hans Hannu
Lars-Erik Jonsson
Krister Svanbro
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)