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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>Storage Structures</TITLE><META NAME="description" CONTENT="Storage Structures"><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="tex2html307" HREF="node20.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="http://cbl.leeds.ac.uk/nikos/figs/next_motif.gif"></A> <A NAME="tex2html305" 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="tex2html299" HREF="node18.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="tex2html308" HREF="node20.html">Methods</A><B>Up:</B> <A NAME="tex2html306" HREF="node18.html">MacGprs class in C++</A><B> Previous:</B> <A NAME="tex2html300" HREF="node18.html">MacGprs class in C++</A><BR> <P><H3><A NAME="SECTION00129100000000000000">Storage Structures</A></H3><P>In this section, we summarize the important storage structures used.<P><UL><LI> At the MS</UL><P><TT>Packet *pktTx[i]</TT>: pointer to the packet to be sent in Upslot i<P><TT>Packet *pktRx[i]</TT>: pointer to the packet received in Downslot i<P><TT>int tx_chan[i]</TT>: which channel should the MS transmit on in Upslot i<P><TT>int rx_chan[i]</TT>: which channel should the MS listen to in Downslot i<P> <BR><P>Note: <TT>tx_chan[0]</TT> = 0 for Random Access<P><TT>rx_chan[0]</TT>=0 for Broadcasts and other messages from BS<P>This structure also allows for multi-slot allocation to be included later.<P><UL><LI> At the BS</UL><P><TT>Packet *txQ[i][j]</TT>: pointer to the packet to be sent in Downslot j, frequency i<P><TT>Packet *rxQ[i][j]</TT>: pointer to the packet received in Upslot j, frequency i<P><TT>int vlr_.hier_addr_[i]</TT>: hierarchical address of MS with MAC index i<P><TT>int vlr_.up_table[i][j]</TT>: MAC index of MS alloted Upslot j on frequency i<P><TT>int vlr_.down_table[i][j]</TT>: MAC index of MS alloted Downslot j on frequency i<P> <BR><P><B>Note:</B>These structures have to be unique for each BS. Since <I>ns</I> doesnot currently have a separate BS node at the C++ level (<I>ns</I>configures a node as BS only at the OTcl level), these structures hadto be made static. This limits our simulator to supporting just oneBS and consequently, just one cell.<P><BR> <HR><P><ADDRESS><I>Richa Jain (96D07007) <BR>Tue Jul 24 22:29:53 IST 2001</I></ADDRESS></BODY></HTML>?? 快捷鍵說明
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