Get latitude and longitude from cellid, lac, MCC, MNC in ASP.NET webservice
Domanda
I have an .asmx webservice that gets the cellid, MCC, MNC and LAC and I want to use opencellid to get the latitude and longitude from these information, I didn't find resources in the internet, so I don't kow where to start. if you can help me to find out how to do that, or give me an alternative solution to find latitude and longitude from these informations it would be nice. Thanks
Soluzione
i face the same situation. read this.. answer is here. you can merge this code to your projecct..
http://android-coding.blogspot.com/2011/06/convert-celllocation-to-real-location.html
Altri suggerimenti
How to get latitude and longitude from these parameters in a nice and elegant way using GoogleMaps Api
.
I wrote A blog post about it here: Blog Post
Add this class to your project:
public class GoogleMapsApi
{
static byte[] PostData(int MCC, int MNC, int LAC, int CID)
{
/* The shortCID parameter follows heuristic experiences:
* Sometimes UMTS CIDs are build up from the original GSM CID (lower 4 hex digits)
* and the RNC-ID left shifted into the upper 4 digits.
*/
byte[] pd = new byte[] {
0x00, 0x0e,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
0x00, 0x00,
0x00, 0x00,
0x1b,
0x00, 0x00, 0x00, 0x00, // Offset 0x11
0x00, 0x00, 0x00, 0x00, // Offset 0x15
0x00, 0x00, 0x00, 0x00, // Offset 0x19
0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // Offset 0x1f
0x00, 0x00, 0x00, 0x00, // Offset 0x23
0x00, 0x00, 0x00, 0x00, // Offset 0x27
0x00, 0x00, 0x00, 0x00, // Offset 0x2b
0xff, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0x00
};
bool isUMTSCell = ((Int64)CID > 65535);
/* if (shortCID)
CID &= 0xFFFF; /* Attempt to resolve the cell using the
GSM CID part */
if ((Int64)CID > 65536) /* GSM: 4 hex digits, UTMS: 6 hex
digits */
pd[0x1c] = 5;
else
pd[0x1c] = 3;
pd[0x11] = (byte)((MNC >> 24) & 0xFF);
pd[0x12] = (byte)((MNC >> 16) & 0xFF);
pd[0x13] = (byte)((MNC >> 8) & 0xFF);
pd[0x14] = (byte)((MNC >> 0) & 0xFF);
pd[0x15] = (byte)((MCC >> 24) & 0xFF);
pd[0x16] = (byte)((MCC >> 16) & 0xFF);
pd[0x17] = (byte)((MCC >> 8) & 0xFF);
pd[0x18] = (byte)((MCC >> 0) & 0xFF);
pd[0x27] = (byte)((MNC >> 24) & 0xFF);
pd[0x28] = (byte)((MNC >> 16) & 0xFF);
pd[0x29] = (byte)((MNC >> 8) & 0xFF);
pd[0x2a] = (byte)((MNC >> 0) & 0xFF);
pd[0x2b] = (byte)((MCC >> 24) & 0xFF);
pd[0x2c] = (byte)((MCC >> 16) & 0xFF);
pd[0x2d] = (byte)((MCC >> 8) & 0xFF);
pd[0x2e] = (byte)((MCC >> 0) & 0xFF);
pd[0x1f] = (byte)((CID >> 24) & 0xFF);
pd[0x20] = (byte)((CID >> 16) & 0xFF);
pd[0x21] = (byte)((CID >> 8) & 0xFF);
pd[0x22] = (byte)((CID >> 0) & 0xFF);
pd[0x23] = (byte)((LAC >> 24) & 0xFF);
pd[0x24] = (byte)((LAC >> 16) & 0xFF);
pd[0x25] = (byte)((LAC >> 8) & 0xFF);
pd[0x26] = (byte)((LAC >> 0) & 0xFF);
return pd;
}
static public string[] GetLatLng(int MCC, int MNC, int LAC, int CID)
{
string[] result = new string[2];
try
{
String url = "http://www.google.com/glm/mmap";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(
new Uri(url));
req.Method = "POST";
byte[] pd = PostData(MCC, MNC, LAC, CID);
req.ContentLength = pd.Length;
req.ContentType = "application/binary";
Stream outputStream = req.GetRequestStream();
outputStream.Write(pd, 0, pd.Length);
outputStream.Close();
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
byte[] ps = new byte[res.ContentLength];
int totalBytesRead = 0;
while (totalBytesRead < ps.Length)
{
totalBytesRead += res.GetResponseStream().Read(
ps, totalBytesRead, ps.Length - totalBytesRead);
}
if (res.StatusCode == HttpStatusCode.OK)
{
short opcode1 = (short)(ps[0] << 8 | ps[1]);
byte opcode2 = ps[2];
int ret_code = (int)((ps[3] << 24) | (ps[4] << 16) |
(ps[5] << 8) | (ps[6]));
if (ret_code == 0)
{
double lat = ((double)((ps[7] << 24) | (ps[8] << 16)
| (ps[9] << 8) | (ps[10]))) / 1000000;
double lon = ((double)((ps[11] << 24) | (ps[12] <<
16) | (ps[13] << 8) | (ps[14]))) /
1000000;
result[0] = lat.ToString();
result[1] = lon.ToString();
return result;
}
else
{
return result;
}
}
else
return result;
}
catch (Exception ex)
{
result[0] = ex.Message;
return result;
}
}
}
Call the class to get the latitude and logitude wherever you want:
string[] s = GoogleMapsApi.GetLatLng(MCC, MNC, lac, cellid);
double lat = 0;
Boolean b1 = double.TryParse(s[0], out lat);
double lon = 0;
Boolean b2 = double.TryParse(s[1], out lon);