sdr
/
gr-gsm
8
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Dehopping for Uplink channels has been added.

This commit is contained in:
Your Name 2016-07-12 17:23:13 +04:30
parent bd8a716369
commit a7976a3b42
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/receiver/cx_channel_hopper_impl.cc
View File

@ -141,9 +141,21 @@ namespace gr {
{
pmt::pmt_t header_plus_burst = pmt::cdr(msg);
gsmtap_hdr *header = (gsmtap_hdr *)pmt::blob_data(header_plus_burst);
bool uplink_burst = (be16toh(header->arfcn) & 0x4000) ? true : false;
uint32_t frame_nr = be32toh(header->frame_number);
uint16_t frame_ca = be16toh(header->arfcn);
uint16_t frame_ca;
// FIXED for uplink
if (uplink_burst)
{
frame_ca = be16toh(header->arfcn)-16384; //16384 = 0x4000
}
else
{
frame_ca = be16toh(header->arfcn);
}
int mai = calculate_ma_sfh(d_maio, d_hsn, d_narfcn, frame_nr);
if(d_ma[mai] == (int)frame_ca) {