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Storage Structures

In this section, we summarize the important storage structures used.

Packet *pktTx[i]: pointer to the packet to be sent in Upslot i

Packet *pktRx[i]: pointer to the packet received in Downslot i

int tx_chan[i]: which channel should the MS transmit on in Upslot i

int rx_chan[i]: which channel should the MS listen to in Downslot i


Note: tx_chan[0] = 0 for Random Access

rx_chan[0]=0 for Broadcasts and other messages from BS

This structure also allows for multi-slot allocation to be included later.

Packet *txQ[i][j]: pointer to the packet to be sent in Downslot j, frequency i

Packet *rxQ[i][j]: pointer to the packet received in Upslot j, frequency i

int vlr_.hier_addr_[i]: hierarchical address of MS with MAC index i

int vlr_.up_table[i][j]: MAC index of MS alloted Upslot j on frequency i

int vlr_.down_table[i][j]: MAC index of MS alloted Downslot j on frequency i


Note: These structures have to be unique for each BS. Since ns does not currently have a separate BS node at the C++ level (ns configures a node as BS only at the OTcl level), these structures had to be made static. This limits our simulator to supporting just one BS and consequently, just one cell.



Richa Jain (96D07007)
Tue Jul 24 22:29:53 IST 2001