Hello, just for your information:
we have added active queue management based on CoDel to the osmo-pcu project (https://openbsc.osmocom.org/trac/wiki/osmo-pcu), which is an open source software based GPRS-only PCU implementation. The implementation is based on http://queue.acm.org/appendices/codel.html but is deployed as a time stamp based automaton. It is being applied independently per mobile station (phone) in downlink direction only. The goal was to have PCU based AQM as a last resort if BSSGP flow control is not sufficient. Since the IP packets are eventually split and encapsulated within LLC frames which are generally encrypted, the PCU is not an optimal place to do AQM. Nevertheless it improves the TCP "experience" and downlink ping latencies under load significantly. Kind regards Jacob -- - Jacob Erlbeck <[email protected]> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte _______________________________________________ Codel mailing list [email protected] https://lists.bufferbloat.net/listinfo/codel
