/* ************************************************** */
void cs_init(call_t *c) {
struct nodedata *nodedata = get_node_private_data(c);
/* log */
if (nodedata->tx_busy != -1) {
PRINT_REPLAY("radio-tx1 %"PRId64" %d\n", get_time(), c->node);
}
if (nodedata->rx_busy != -1) {
PRINT_REPLAY("radio-rx1 %"PRId64" %d\n", get_time(), c->node);
}
/* init cs */
nodedata->tx_busy = -1;
nodedata->rx_busy = -1;
nodedata->rxdBm = MIN_DBM;
}
/* ************************************************** */
void tx(call_t *c, packet_t *packet) {
struct nodedata *nodedata = get_node_private_data(c);
array_t *down = get_entity_bindings_down(c);
int i = down->size;
/* radio sleep */
if (nodedata->sleep) {
packet_dealloc(packet);
return;
}
/* radio activity */
cs_init(c);
nodedata->tx_busy = packet->id;
/* log tx */
PRINT_REPLAY("radio-tx0 %"PRId64" %d 50\n", get_time(), c->node);
/* transmit to antenna */
while (i--) {
packet_t *packet_down;
if (i > 0) {
packet_down = packet_clone(packet);
} else {
packet_down = packet;
}
c->from = down->elts[i];
MEDIA_TX(c, packet_down);
}
return;
}
/* ************************************************** */
void rx(call_t *c, packet_t *packet) {
struct nodedata *nodedata = get_node_private_data(c);
array_t *up = get_entity_bindings_up(c);
int i = up->size;
/* radio sleep */
if (nodedata->sleep) {
packet_dealloc(packet);
return;
}
/* half-duplex */
if (nodedata->tx_busy != -1) {
packet_dealloc(packet);
return;
}
/* handle carrier sense */
if (nodedata->rx_busy == packet->id) {
nodedata->rx_busy = -1;
nodedata->rxdBm = MIN_DBM;
/* log rx */
PRINT_REPLAY("radio-rx1 %"PRId64" %d\n", get_time(), c->node);
/* consume energy */
battery_consume_rx(c, packet->duration);
} else {
packet_dealloc(packet);
return;
}
/* check wether the reception has killed us */
if (!is_node_alive(c->node)) {
packet_dealloc(packet);
return;
}
/* drop packet depending on the FER */
if (get_random_double() < packet->PER) {
packet_dealloc(packet);
return;
}
/* forward to upper layers */
while (i--) {
call_t c_up = {up->elts[i], c->node, c->entity};
packet_t *packet_up;
if (i > 0) {
packet_up = packet_clone(packet);
} else {
packet_up = packet;
}
RX(&c_up, packet_up);
}
return;
}
/* ************************************************** */
int bootstrap(call_t *c) {
struct nodedata *nodedata = get_node_private_data(c);
PRINT_REPLAY("mobility %"PRId64" %d %lf %lf %lf\n", get_time(), c->node,
get_node_position(c->node)->x, get_node_position(c->node)->y,
get_node_position(c->node)->z);
nodedata->lupdate = get_time();
nodedata->nupdate = get_time() + nodedata->pausetime;
return 0;
}
void cs(call_t *c, packet_t *packet) {
struct nodedata *nodedata = get_node_private_data(c);
/* radio sleep */
if (nodedata->sleep) {
return;
}
/* half-duplex */
if (nodedata->tx_busy != -1) {
return;
}
/* check sensibility */
if (packet->rxdBm < nodedata->mindBm) {
return;
}
/* check channel */
if (nodedata->channel != packet->channel) {
return;
}
/* check Ts */
if (nodedata->Ts != (packet->Tb*radio_get_modulation_bit_per_symbol(c))) {
return;
}
/* check channel */
if (packet->modulation != nodedata->modulation) {
return;
}
/* capture effect */
if (packet->rxdBm > nodedata->rxdBm) {
nodedata->rxdBm = packet->rxdBm;
nodedata->rx_busy = packet->id;
/* log cs */
PRINT_REPLAY("radio-rx0 %"PRId64" %d\n", get_time(), c->node);
return;
}
return;
}
void tx_end(call_t *c, packet_t *packet) {
struct nodedata *nodedata = get_node_private_data(c);
/* consume energy */
battery_consume_tx(c, packet->duration, nodedata->power);
/* check wether the reception has killed us */
if (!is_node_alive(c->node)) {
return;
}
/* log tx */
if (nodedata->tx_busy == packet->id) {
PRINT_REPLAY("radio-tx1 %"PRId64" %d\n", get_time(), c->node);
nodedata->tx_busy = -1;
}
return;
}
/* ************************************************** */
void update_position(call_t *c) {
struct nodedata *nodedata = get_node_private_data(c);
while (nodedata->lupdate < get_time()) {
if (nodedata->nupdate <= get_time()) {
nodedata->lupdate = nodedata->nupdate;
nodedata->nupdate += nodedata->pausetime;
get_node_position(c->node)->x = get_random_x_position();
get_node_position(c->node)->y = get_random_y_position();
get_node_position(c->node)->z = get_random_z_position();
PRINT_REPLAY("mobility %"PRId64" %d %lf %lf %lf\n", nodedata->lupdate, c->node, get_node_position(c->node)->x, get_node_position(c->node)->y, get_node_position(c->node)->z);
} else {
nodedata->lupdate = get_time();
break;
}
}
return;
}
/* ************************************************** */
int bootstrap(call_t *c) {
PRINT_REPLAY("mobility %"PRId64" %d %lf %lf %lf\n", get_time(), c->node,
get_node_position(c->node)->x, get_node_position(c->node)->y,
get_node_position(c->node)->z);
return 0;
}
