Your initial post looks like it was copied verbatim out of an assignment of
some kind..

Ah well.. I guess you'd want to take a look at the GSM specifications at
http://www.etsi.org

1. GSM defines :

for the MS: 5 power classes for GMSK (GSM, GPRS) and 3 power classes for
EDGE which range from maximum output power - (GSM900) 0.8W - 8W and
(GSM1800) 0.25W - 4W

for the BTS: 8 power classes for GMSK which range from maximum output power
(GSM900) 2.5W - 320W and (GSM1800) 2.5W - 20W

See GSM 05.05

2. Channel coding - at the physical layer GSM typically uses convolutional
coding for FEC, with a large set of polynomials and puncturing patterns
depending on the overlaying logical channels (and in the case of GPRS/EDGE,
the selected modulation and coding scheme). Code rates can vary from
something like (off the top of my head) 1/3 to 1/1. Interleaving usually
occurs over 4 radio bursts "block", GSM 05.xx has details on this. This has
become more and more complex with revisions to the GSM specs (GPRS, EDGE,
etc).

See GSM 05.03

3. C1 cell reselection criteria is the base level criteria for cell
reselection. For each cell, C1 is calculated as [ RLA_C (Rx level in dBm) -
RXLEV_ACCESS_MIN (which is a BCCH defined parameter) ] -
Max(MS_TXPWR_MAX_CCH - MAX_RF_POWER, 0).

MS_TXPWR_MAX_CCH is the maximum transmit power for accessing system, dBm, P
is max RF power of the MS (phone). The formula is slightly more complicated
for DCS1800.

In other words, the C1 is how much stronger the received (BCCH) signal is
than some minimum signal required to access the cell, which is a combination
of broadcast parameters and MS capabilities. If C1 falls below zero for 5
seconds or more, cell reselection occurs.

The C2 value is derived from C1 by adding a CELL_RESELECT_OFFSET (either
positive or negative) and a TEMPORARY_OFFSET (which is valid for a certain
time after the cell is first discovered). Operators can use this to
discourage camping on certain types of cell - for example Optus in Australia
applies a -20dB CELL_RESELECT_OFFSET to most GSM1800 cells to discourage
idle camping. Vodafone Australia in some urban areas apply temporary offsets
to cells they don't want moving vehicles camping on (i.e. hopefully the
vehicle will have moved through the area before the TEMPORARY_OFFSET is
removed).

(In general) when a non-serving cell's C2 exceeds the serving cell's C2 for
5 seconds or more, the new cell is selected.

GSM 05.08, 04.08 have quite a bit of details on this.