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-according to GSM 05.02:
-
-general parameters from CCCH:
-* CA cell allocation of ARFCN's (System Information / BCCH)
-* FN: TDMA frame number (t1,t2,t3') in SCH
-
-specific parameters from channel assignment:
-* MA: mobile allocation, defines set of ARFCN's, up to 64
-* MAIO: index
-* HSN: hopping sequence generator number (0..64)
-
-
-hopping sequence generation (6.2.3):
-
-uint8_t rntable[114] = {
- 48, 98, 63, 1, 36, 95, 78, 102, 94, 73,
- 0, 64, 25, 81, 76, 59, 124, 23, 104, 100,
- 101, 47, 118, 85, 18, 56, 96, 86, 54, 2,
- 80, 34, 127, 13, 6, 89, 57, 103, 12, 74,
- 55, 111, 75, 38, 109, 71, 112, 29, 11, 88,
- 87, 19, 3, 68, 110, 26, 33, 31, 8, 45,
- 82, 58, 40, 107, 32, 5, 106, 92, 62, 67,
- 77, 108, 122, 37, 60, 66, 121, 42, 51, 126,
- 117, 114, 4, 90, 43, 52, 53, 113, 120, 72,
- 16, 49, 7, 79, 119, 61, 22, 84, 9, 97,
- 125, 99, 17, 123
-};
-
-/* mai=0 represents lowest ARFCN in the MA */
-
-
-uint8_t hopping_mai(uint8_t hsn, uint32_t fn, uint8_t maio,
- uint8_t t1, uint8_t t2, uint8_t t3_)
-{
- uint8_t mai;
-
- if (hsn == 0) /* cyclic hopping */
- mai = (fn + maio) % n;
- else {
- uint32_t m, m_, t_, s;
-
- m = t2 + rntable[(hsn xor (t1 % 64)) + t3];
- m_ = m % (2^NBIN);
- t_ = t3 % (2^NBIN);
- if (m_ < n then)
- s = m_;
- else
- s = (m_ + t_) % n;
- mai = (s + maio) % n;
- }
-
- return mai;
-}
-