If I am reading that right, it's TDMA correct? If so Berkeley is doing research in this area and developed a software stack for it: http://tier.cs.berkeley.edu/wiki/Wireless
Joe Christensen wrote: > Hello all, > > Great meeting last night. One of the items unresolved was our > discussion of WIMAX and how it controls access to the network. I > looked it up on wikipeda and confirmed that WIMAX uses a time-slot for > each client, thus preventing one node from hogging the signal or data > collisions between clients. This is a big enhancement from wifi. > > From wikipedia: (http://en.wikipedia.org/wiki/WiMAX) > "In Wi-Fi the media access controller (MAC) uses contention access — > all subscriber stations that wish to pass data through a wireless > access point (AP) are competing for the AP's attention on a random > interrupt basis. This can cause subscriber stations distant from the > AP to be repeatedly interrupted by closer stations, greatly reducing > their throughput. This makes services such as Voice over IP (VoIP) or > IPTV, which depend on an essentially-constant Quality of Service (QoS) > depending on data rate and interruptibility, difficult to maintain for > more than a few simultaneous users. > > In contrast, the 802.16 MAC uses a scheduling algorithm for which the > subscriber station needs to compete only once (for initial entry into > the network). After that it is allocated an access slot by the base > station. The time slot can enlarge and contract, but remains assigned > to the subscriber station, which means that other subscribers cannot > use it. In addition to being stable under overload and over- > subscription (unlike 802.11), the 802.16 scheduling algorithm can also > be more bandwidth efficient. The scheduling algorithm also allows the > base station to control QoS parameters by balancing the time-slot > assignments among the application needs of the subscriber stations." > > > > Cheers, > > Joe > > On Sep 15, 2:39 pm, "Michael Weinberg" <[EMAIL PROTECTED]> > wrote: > >> Hello all, >> >> The next PTP meeting will be this Wednesday at 6:30pm at the Green >> Dragon on SE 9th and Yamhill. Let's gather outside in the nice patio >> area. >> >> You can post meeting items here, or just show up and share what's on your >> mind: >> >> http://www.personaltelco.net/WeeklyMeeting20080917 >> >> -- >> Michael Weinberg >> President >> Personal Telco Project, Inc. >> A 501(c)(3) Non-Profit >> > > > -- Charles Wyble (818) 280 - 7059 http://charlesnw.blogspot.com CTO Known Element Enterprises / SoCal WiFI project --~--~---------~--~----~------------~-------~--~----~ The Personal Telco Project - http://www.personaltelco.net/ Donate to PTP: http://www.personaltelco.net/donate Archives: http://news.gmane.org/gmane.network.wireless.portland.general/ Etiquette: http://www.personaltelco.net/index.cgi/MailingListEtiquette List information: http://lists.personaltelco.net To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] -~----------~----~----~----~------~----~------~--~---
