NIST 建立packet 的一些動作

mac_->getPacket ();
struct hdr_cmn *ch = HDR_CMN(rep);
rep->allocdata (sizeof (struct mac802_16_rng_rsp_frame));
mac802_16_rng_rsp_frame *frame = (mac802_16_rng_rsp_frame*) rep->accessdata();
frame->type = MAC_RNG_RSP;
frame->uc_id = ulsubframe->getChannelID();
frame->rng_status = RNG_SUCCESS;
frame->ss_mac_address = req->ss_mac_address;
frame->basic_cid = basic->get_cid();
frame->primary_cid = primary->get_cid();
ch->size() = RNG_RSP_SIZE;
Burst *b = map_->getDlSubframe()->getPdu ()->getBurst (0);
double txtime = mac_->getPhy()->getTrxTime (ch->size(),map_->getDlSubframe()->getProfile (b->getIUC())->getEncoding());
ch->txtime() = txtime;
mac_->getCManager()->get_connection (BROADCAST_CID, false)->enqueue (rep);