FreeCalypso > hg > freecalypso-tools

annotate doc/ARFCN-mapping @ 791:a31ae776de6e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-simint: tell the user when we are requesting spenh
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 19 Mar 2021 04:42:41 +0000
parents e1c8c5bcb233
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
760
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 Frequency bands and band-pairs
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ==============================
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 TI's TCS211 L1 (meaning Layer1 component of TI's TCS211 reference fw and of all
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 FreeCalypso firmwares that are based on TCS211) can operate either in a single
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 frequency band or in a pair of bands (one low band and one high band)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 corresponding to a regional standard. TI's G23M protocol stack (specifically
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 its ALR component) commands L1 to operate in a given "standard" (single band or
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 pair of bands) by way of MPHC_INIT_L1_REQ primitive, which appears in L1 debug
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 trace output (seen via rvtdump or rvinterf) as a BAND_R trace. The "standard"
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 number that appears in this BAND_R trace is one of the following 8
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 possibilities:
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 STD 1 (GSM)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 This STD tells L1 to operate only in the GSM900 band by itself (not
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 paired with DCS1800), and furthermore to use the old definition of this
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 GSM900 band with only 124 channels. TI's code supports this option in
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 order to support old RF hardware that was made for this old definition
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 of the GSM900 band, but none of the phones, modems or development boards
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 we work with in FreeCalypso are this old - thus this STD 1 should never
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 get activated unless something is misconfigured somewhere.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 STD 2 (GSM_E)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 This STD tells L1 to operate in the EGSM band, i.e., the new extended
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 definition of the 900 MHz band with 174 channels total - but it still
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 specifies only the EGSM band by itself, not paired with DCS1800. We
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 don't have any FC hardware targets that support the 900 MHz band but
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 don't support DCS1800, thus this STD can only get selected if the DCS
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 band is artificially disabled - and we do not currently know of any use
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 case for disabling DCS while keeping EGSM enabled - thus this STD should
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 not be seen in practice either.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 STD 3 (PCS1900)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 This STD tells L1 to operate in the PCS band by itself. This STD
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 selection occurs in regular operation on devices like the Pirelli DP-L10
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 and the tri900 version of our FCDEV3B: on such tri900 platforms the G23M
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 protocol stack switches L1 back and forth between STD 6 (900+1800 MHz
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 band pair, see below) and STD 3 for PCS. Because tri900 platforms have
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 no support for the GSM850 band, the PCS1900 band gets selected as a
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 singleton (not a band pair) when the device operates on the "US" side
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 of its multi-region frequency band support.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 STD 4 (DCS1800)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 This STD tells L1 to operate in the DCS band by itself, not paired with
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 900 MHz GSM or EGSM. Triband devices built in the tri850 configuration
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 (GTA02-850 and FCDEV3B-850) will select this STD when looking for
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 possible DCS1800 cells - however, our expected user pattern is such that
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 a user living or operating in EU-band lands (EGSM and/or DCS bands)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 would not be using a tri850 device, much in contrast with the reverse
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 situation where tri900 devices are commonly used in the PCS1900 band.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 STD 5 (DUAL)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 This STD selects a band pair consisting of the old 124-channel
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 definition of the GSM900 band plus the DCS1800 band. Because all hw
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 platforms targeted by FreeCalypso support the 900 MHz band in its new
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 EGSM definition if they support it at all, this STD 5 should never get
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 activated unless something is misconfigured somewhere.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 STD 6 (DUALEXT)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 This STD selects the classic "EU" band pair of EGSM + DCS1800. This STD
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 selection will occur in normal operation on EU dual-band devices like
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 the EU versions of Motorola C1xx and Huawei GTM900-B, as well as tri900
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 and quadband devices operating on the "EU" side of their multi-region
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 frequency band support.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 STD 7 (GSM850)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 This STD tells L1 to operate in the GSM850 band by itself. We don't
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 have any FC hardware targets that support the 850 MHz band but don't
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 support PCS1900, thus this STD can only get selected if the PCS band is
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 artificially disabled.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 STD 8 (DUAL_US)
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 This STD selects the full "US" band pair of GSM850 + PCS1900. This STD
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 selection will occur in normal operation on US dual-band devices like
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 the US versions of Motorola C1xx and Huawei GTM900-P, as well as tri850
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 and quadband (but not tri900!) devices operating on the "US" side of
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 their multi-region frequency band support. Note that tri900 devices
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 will go into STD 3 (PCS1900 band by itself) instead!
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 ARFCN munging
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 =============
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 When L1 operates in one of single-band standards 1 (GSM), 3 (PCS1900), 4
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 (DCS1800) or 7 (GSM850), its internal radio_freq numbers that appear in L1 debug
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 traces are exactly equal to standard ARFCNs for that band as defined by ETSI.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 However, when it operates in STD 2 (EGSM by itself) or in any of the dual-band
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 standards, it uses its own radio_freq numbers which are different from standard
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 ARFCNs. Non-standard internal radio_freq numbers are used in these cases
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 because L1 needs a continuous number range for indexing arrays, and the mappings
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 are given below. STD 6 (DUALEXT) and STD 2 (GSM_E) use the following mapping:
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 Band Standard ARFCN TCS211 L1 radio_freq
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 --------------------------------------------
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 EGSM 1-124 1-124
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 EGSM 975-1023 125-173
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 EGSM 0 174
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 DCS 512-885 175-548
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 The internal radio_freq number for the DUALEXT band pair ranges continuously
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 from 1 to 548. STD 2 (EGSM by itself) uses the same mapping without the DCS
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 subrange, with radio_freq ranging continously from 1 to 174. DUAL_US band pair
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 (STD 8) uses a continuous radio_freq range from 1 to 423 as follows:
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 Band Standard ARFCN TCS211 L1 radio_freq
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 --------------------------------------------
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 GSM850 128-251 1-124
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 PCS 512-810 125-423
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 Because these internal radio_freq numbers appear in L1 debug traces, power users
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 who like to understand these traces and see what their phone is doing need to
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 be able to work with these numbers. I (Mother Mychaela) currently use a Pirelli
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 DP-L10 running its original proprietary fw as my everyday phone, for lack of
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 anything better, and because it is a tri900 device, it operates in STD 3 for
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 PCS1900 band by itself. In this configuration all radio_freq numbers that
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 appear in the debug trace output are native PCS band ARFCNs without any munging,
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 thus no conversion tools are needed. However, I am now starting to work more
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 with quadband Tango modules and development boards (iWOW DSK and FC Caramel2),
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 and we also have a few FCDEV3B-850 boards; these platforms support both GSM850
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 and PCS1900 bands and thus go into STD 8 for DUAL_US, and this dual-band STD
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 involves ARFCN munging as detailed above. Furthermore, anyone who lives or
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 operates in EU-band lands would normally be operating in dual-band STD 6
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 (DUALEXT), and that one also involves ARFCN munging.
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 Because there is a need to translate back and forth between standard ARFCNs and
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 L1 radio_freq numbers, a pair of utilities has been written for this purpose:
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 arfcn2ti and ti2arfcn. Their usage and operation is straightforward; each
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 utility takes two command line arguments: a keyword of "eu" or "us" selecting
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 the band pair being mapped, and the number to be converted. The output of the
e1c8c5bcb233 ARFCN conversion tools documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 conversion (the other number) is printed on stdout.