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来自「用C++编写的GPRS协议栈源代码」· HTML 代码 · 共 37 行
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!--Converted with LaTeX2HTML 96.1 (Feb 5, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><HTML><HEAD><TITLE>Timers</TITLE><META NAME="description" CONTENT="Timers"><META NAME="keywords" CONTENT="gprs"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><LINK REL=STYLESHEET HREF="gprs.css"></HEAD><BODY LANG="EN"> <A NAME="tex2html325" HREF="node22.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="http://cbl.leeds.ac.uk/nikos/figs/next_motif.gif"></A> <A NAME="tex2html323" HREF="node18.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="http://cbl.leeds.ac.uk/nikos/figs/up_motif.gif"></A> <A NAME="tex2html319" HREF="node20.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="http://cbl.leeds.ac.uk/nikos/figs/previous_motif.gif"></A> <BR><B> Next:</B> <A NAME="tex2html326" HREF="node22.html">Psuedocode for Packet Processing </A><B>Up:</B> <A NAME="tex2html324" HREF="node18.html">MacGprs class in C++</A><B> Previous:</B> <A NAME="tex2html320" HREF="node20.html">Methods</A><BR> <P><H3><A NAME="SECTION00129300000000000000">Timers</A></H3><P>The following is a list of timers used by the system<UL><LI> Up-Slot Timer : clocks slots on the Uplink frequencies.<LI> Down-Slot Timer : clocks slots on the Downlink frequencies.<LI> Packet Transmit Timer : times the transmission of a packet.<LI> Packet Receive Timer : keeps track while a packet is beingreceived.<LI> Wait Timer : the amount of time to wait for a <EM>resource_reply</EM>.<LI> Backoff Timer : to back off for a random interval beforeretransmitting a <EM>resource_request</EM>.</UL><P>The psuedocode for the implementation is listed in Appendix II. Wedescribe the simulations performed using our extensions for GPRS in <I>ns</I> in the next chapter.<P><BR> <HR><P><ADDRESS><I>Richa Jain (96D07007) <BR>Tue Jul 24 22:29:53 IST 2001</I></ADDRESS></BODY></HTML>
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